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(-) Description

Title :  MGATP-BOUND AND NUCLEOTIDE-FREE STRUCTURES OF A NITROGENASE PROTEIN COMPLEX BETWEEN LEU127DEL-FE PROTEIN AND THE MOFE PROTEIN
 
Authors :  H. -J. Chiu, J. W. Peters, W. N. Lanzilotta, M. J. Ryle, L. C. Seefeldt, J. B. Howard, D. C. Rees
Date :  16 Oct 00  (Deposition) - 31 Jan 01  (Release) - 05 May 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.00
Chains :  Asym./Biol. Unit :  A,B,C,D,E,F,G,H
Keywords :  Nitrogen-Fixation, Fe Protein, Moefe Protein, P-Cluster, Femo Cofactor, 4Fe-4S, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  H. Chiu, J. W. Peters, W. N. Lanzilotta, M. J. Ryle, L. C. Seefeldt, J. B. Howard, D. C. Rees
Mgatp-Bound And Nucleotide-Free Structures Of A Nitrogenase Protein Complex Between The Leu 127 Delta-Fe-Protein And The Mofe-Protein.
Biochemistry V. 40 641 2001
PubMed-ID: 11170380  |  Reference-DOI: 10.1021/BI001645E
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - NITROGENASE MOLYBDENUM-IRON PROTEIN ALPHA CHAIN
    Chains: A, C
    EC Number: 1.18.6.1
    Organism Scientific: AZOTOBACTER VINELANDII
    Organism Taxid: 354
    Synonym: NITROGENASE COMPONENT I, DINITROGENASE, NIFD
 
Molecule 2 - NITROGENASE MOLYBDENUM-IRON PROTEIN BETA CHAIN
    Chains: B, D
    EC Number: 1.18.6.1
    Organism Scientific: AZOTOBACTER VINELANDII
    Organism Taxid: 354
    Synonym: NITROGENASE COMPONENT I, DINITROGENASE, NIFK
 
Molecule 3 - NITROGENASE IRON PROTEIN
    Chains: E, F, G, H
    EC Number: 1.18.6.1
    Organism Scientific: AZOTOBACTER VINELANDII
    Organism Taxid: 354
    Synonym: NITROGENASE COMPONENT II, NITROGENASE REDUCTASE, NIFH

 Structural Features

(-) Chains, Units

  12345678
Asymmetric/Biological Unit : ABCDEFGH

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (7, 18)

Asymmetric/Biological Unit (7, 18)
No.NameCountTypeFull Name
1ATP4Ligand/IonADENOSINE-5'-TRIPHOSPHATE
2CA2Ligand/IonCALCIUM ION
3CFM2Ligand/IonFE-MO-S CLUSTER
4CLF2Ligand/IonFE(8)-S(7) CLUSTER
5HCA2Ligand/Ion3-HYDROXY-3-CARBOXY-ADIPIC ACID
6MG4Ligand/IonMAGNESIUM ION
7SF42Ligand/IonIRON/SULFUR CLUSTER

(-) Sites  (18, 18)

Asymmetric Unit (18, 18)
No.NameEvidenceResiduesDescription
01AC1SOFTWARESER E:16 , ASP E:39 , ASP E:43 , ASP E:125 , ATP E:5292BINDING SITE FOR RESIDUE MG E 293
02AC2SOFTWARESER F:16 , ASP F:125 , ATP F:6292BINDING SITE FOR RESIDUE MG F 293
03AC3SOFTWARESER H:16 , ASP H:125 , ATP H:8292BINDING SITE FOR RESIDUE MG G 293
04AC4SOFTWARESER G:16 , ASP G:125 , ATP G:7292BINDING SITE FOR RESIDUE MG H 293
05AC5SOFTWAREARG B:108 , GLU B:109 , ASP D:353 , ASP D:357BINDING SITE FOR RESIDUE CA B 2492
06AC6SOFTWAREASP B:353 , ASP B:357 , ARG D:108 , GLU D:109BINDING SITE FOR RESIDUE CA D 4492
07AC7SOFTWARELEU A:158 , VAL B:157 , CYS E:97 , ALA E:98 , GLY E:99 , CYS E:132 , CYS F:97 , ALA F:98 , GLY F:99 , CYS F:132BINDING SITE FOR RESIDUE SF4 F 5290
08AC8SOFTWARELEU C:158 , VAL D:157 , CYS G:97 , ALA G:98 , GLY G:99 , CYS G:132 , CYS H:97 , ALA H:98 , GLY H:99 , CYS H:132BINDING SITE FOR RESIDUE SF4 G 7290
09AC9SOFTWAREGLY E:11 , GLY E:12 , ILE E:13 , GLY E:14 , LYS E:15 , SER E:16 , THR E:17 , ASP E:39 , LYS E:41 , ASN E:185 , PRO E:212 , ASP E:214 , VAL E:217 , GLU E:221 , GLN E:236 , MG E:293 , LYS F:10 , MET F:156BINDING SITE FOR RESIDUE ATP E 5292
10BC1SOFTWAREMET E:156 , GLY F:11 , GLY F:12 , ILE F:13 , GLY F:14 , LYS F:15 , SER F:16 , THR F:17 , ASP F:39 , LYS F:41 , PRO F:212 , ARG F:213 , VAL F:217 , GLN F:218 , GLU F:221 , GLN F:236 , TYR F:240 , MG F:293BINDING SITE FOR RESIDUE ATP F 6292
11BC2SOFTWAREGLY G:11 , GLY G:12 , ILE G:13 , GLY G:14 , LYS G:15 , SER G:16 , THR G:17 , ASP G:39 , ASN G:185 , SER G:186 , PRO G:212 , ARG G:213 , VAL G:217 , GLU G:221 , GLN G:236 , TYR G:240 , LYS H:10 , MET H:156 , MG H:293BINDING SITE FOR RESIDUE ATP G 7292
12BC3SOFTWAREMET G:156 , MG G:293 , GLY H:11 , GLY H:12 , ILE H:13 , GLY H:14 , LYS H:15 , SER H:16 , THR H:17 , ASP H:39 , LYS H:41 , ASN H:185 , PRO H:212 , ARG H:213 , VAL H:217 , GLU H:221 , GLN H:236 , TYR H:240BINDING SITE FOR RESIDUE ATP H 8292
13BC4SOFTWAREGLN A:191 , GLY A:424 , ILE A:425 , LYS A:426 , HIS A:442 , CFM A:1496BINDING SITE FOR RESIDUE HCA A 1494
14BC5SOFTWAREALA C:65 , GLN C:191 , GLY C:424 , ILE C:425 , HIS C:442 , CFM C:3496BINDING SITE FOR RESIDUE HCA C 3494
15BC6SOFTWAREARG A:96 , HIS A:195 , TYR A:229 , ILE A:231 , CYS A:275 , SER A:278 , ILE A:355 , GLY A:357 , LEU A:358 , ARG A:359 , PHE A:381 , HIS A:442 , HCA A:1494BINDING SITE FOR RESIDUE CFM A 1496
16BC7SOFTWAREVAL C:70 , ARG C:96 , HIS C:195 , TYR C:229 , ILE C:231 , CYS C:275 , SER C:278 , ILE C:355 , GLY C:356 , GLY C:357 , LEU C:358 , ARG C:359 , PHE C:381 , HIS C:442 , HCA C:3494BINDING SITE FOR RESIDUE CFM C 3496
17BC8SOFTWARECYS A:62 , TYR A:64 , PRO A:85 , GLY A:87 , CYS A:88 , CYS A:154 , GLY A:185 , CYS B:70 , PRO B:72 , SER B:92 , CYS B:95 , CYS B:153 , SER B:188BINDING SITE FOR RESIDUE CLF A 1498
18BC9SOFTWARECYS C:62 , TYR C:64 , GLY C:87 , CYS C:88 , CYS C:154 , GLY C:185 , CYS D:70 , PRO D:72 , SER D:92 , CYS D:95 , THR D:152 , CYS D:153 , SER D:188BINDING SITE FOR RESIDUE CLF D 3498

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1G21)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Phe B:471 -Pro B:472
2Phe D:471 -Pro D:472

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1G21)

(-) PROSITE Motifs  (5, 20)

Asymmetric/Biological Unit (5, 20)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1NIFH_FRXC_3PS51026 NIFH_FRXC family profile.NIFH1_AZOVI3-275
 
 
 		  4E:2-270
F:2-269
G:2-270
H:2-270
2NITROGENASE_1_1PS00699 Nitrogenases component 1 alpha and beta subunits signature 1.NIFD_AZOVI81-88
 		  2A:81-88
C:81-88
NIFK_AZOVI88-95
 		  2B:88-95
D:88-95
3NIFH_FRXC_1PS00746 NifH/frxC family signature 1.NIFH1_AZOVI88-100
 
 
 		  4E:87-99
F:87-99
G:87-99
H:87-99
4NIFH_FRXC_2PS00692 NifH/frxC family signature 2.NIFH1_AZOVI126-139
 
 
 		  4E:125-138
F:125-138
G:125-138
H:125-138
5NITROGENASE_1_2PS00090 Nitrogenases component 1 alpha and beta subunits signature 2.NIFK_AZOVI151-165
 		  2B:151-165
D:151-165
NIFD_AZOVI152-166
 		  2A:152-166
C:152-166

(-) Exons   (0, 0)

(no "Exon" information available for 1G21)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:476
 aligned with NIFD_AZOVI | P07328 from UniProtKB/Swiss-Prot  Length:492

    Alignment length:476
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474      
           NIFD_AZOVI     5 SREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIHISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIGDDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRILLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESIQKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLLYDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWE 480
               SCOP domains d1g21a_ A: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 1g21A01 A:5-62,A:345-479                                  1g21A02 A:63-205 Nitrogenase molybdenum iron protein domain                                                                                    1g21A03 A:206-320 Nitrogenase molybdenum iron protein domain                                                       ------------------------1g21A01 A:5-62,A:345-479 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhh...hhhhhhhhh...ee...........................hhhhhhh..........eeeee...hhhhhh.....................ee...hhhhhhh.hhhhhhhhhhhhhhhh.....eeeeehhhhhhhh.hhhhhhhhhhhh....ee...........hhhhhhhhhhhhhhhhhhhh...........eeeee......hhhhhhhhhhhh...eeeeee....hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhh....eee....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eee....hhhhhhhhhhhh....eeeeee...hhhhhhhhhhhh....eeee..hhhhhhhhhhhhh..eee.hhhhhhhhhh.........hhhhh...hhhhhhhhhhhhhhhhhh.hhhhhh..... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) ---------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 A   5 SREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIHISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIGDDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRILLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESIQKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLLYDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWE 480
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474      


Chain B from PDB  Type:PROTEIN  Length:522
 aligned with NIFK_AZOVI | P07329 from UniProtKB/Swiss-Prot  Length:523

    Alignment length:522
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521  
           NIFK_AZOVI     2 SQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCALGFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGDDLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVIKRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPMGLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNKRWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLHRSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR 523
               SCOP domains d1g21b_ B: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SCOP domains
               CATH domains --------------------------------------------------------------------1g21B01 B:70-215 Nitrogenase molybdenum iron protein domain                                                                                       1g21B02 B:216-320 Nitrogenase molybdenum iron protein domain                                             1g21B04 B:321-364,B:485-523                 1g21B03 B:365-470 Nitrogenase molybdenum iron protein domain                                              --------------1g21B04 B:321-364,B:485-523             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..hhhhh.hhhhhh.hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh....ee.....hhhhhhhhhhhh...eeeeeee.hhhhhhhhhhhhhhhh.....eeee.hhhhhhhhhhhhhhhhhhhhhhhh...eeeeeehhhhhhhh.hhhhhhhhhhhh...................hhhhhhhhhhhhhhhhh.hhhhh.........eeee.....hhhhhhhhhhhhhhh...eee.....hhhhh.............hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhh.............hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhhh.eeeeeee...hhhhhhhhhhhhhh.......eeee..hhhhhhhhhhhh...eeeehhhhhhhhhhhhhhhhhhh..eee................hhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (2) -----------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) --------------------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1g21 B   2 SQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCALGFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGDDLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVIKRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPMGLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNKRWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLHRSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR 523
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521  


Chain C from PDB  Type:PROTEIN  Length:476
 aligned with NIFD_AZOVI | P07328 from UniProtKB/Swiss-Prot  Length:492

    Alignment length:476
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474      
           NIFD_AZOVI     5 SREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIHISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIGDDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRILLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESIQKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLLYDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWE 480
               SCOP domains d1g21c_ C: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 1g21C01 C:5-62,C:345-479                                  1g21C02 C:63-205 Nitrogenase molybdenum iron protein domain                                                                                    1g21C03 C:206-320 Nitrogenase molybdenum iron protein domain                                                       ------------------------1g21C01 C:5-62,C:345-479 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhh....ee..........................hhhhhhh..........eeee.....hhhhh.....................ee...hhhhhhhh.hhhhhhhhhhhhhhh.....eeee.hhhhhhhh.hhhhhhhhhhhh....ee...........hhhhhhhhhhhhhhhhhhhh...........eeeee......hhhhhhhhhhhhh..eeeeee....hhhhhhhhhhh.eeee.....hhhhhhhhhhh....eee....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eee....hhhhhhhhhhhh....eeeeee...hhhhhhhhhhhh...eeeee..hhhhhhhhhhhhh..eee.hhhhhhhhhh.........hhhhh...hhhhhhhhhhhhhhhhhh.hhhhhh..... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) ---------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 C   5 SREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIHISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIGDDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRILLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESIQKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLLYDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWE 480
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474      


Chain D from PDB  Type:PROTEIN  Length:522
 aligned with NIFK_AZOVI | P07329 from UniProtKB/Swiss-Prot  Length:523

    Alignment length:522
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521  
           NIFK_AZOVI     2 SQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCALGFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGDDLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVIKRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPMGLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNKRWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLHRSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR 523
               SCOP domains d1g21d_ D: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SCOP domains
               CATH domains --------------------------------------------------------------------1g21D01 D:70-215 Nitrogenase molybdenum iron protein domain                                                                                       1g21D02 D:216-320 Nitrogenase molybdenum iron protein domain                                             1g21D04 D:321-364,D:485-523                 1g21D03 D:365-470 Nitrogenase molybdenum iron protein domain                                              --------------1g21D04 D:321-364,D:485-523             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..hhhhh.hhhhhh.hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh....ee.....hhhhhhhhhhhh...eeeeeee.hhhhhhhhhhhhhhhh.....eeee.hhhhhhhhhhhhhhhhhhhhhhhh...eeeeeehhhhhhh..hhhhhhhhhhhh...................hhhhhhhhhhhhhhhhh..hhhhhh.......eeee.....hhhhhhhhhhhhhhh...eee.....hhhhh.............hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhh.............hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhhh.eeeeeee...hhhhhhhhhhhhhhhhhhh..eeee..hhhhhhhhhhhh...eeeehhhhhhhhhhhhhhhhhhh..eee.........hhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (2) -----------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) --------------------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1g21 D   2 SQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCALGFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGDDLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVIKRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPMGLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNKRWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLHRSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR 523
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521  


Chain E from PDB  Type:PROTEIN  Length:268
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:269
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262         
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 271
               SCOP domains d1g21e_ E: Nitrogenase iron protein                                                                                                                                                                                                                                           SCOP domains
               CATH domains 1g21E00 E:2-270 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee.....hhhhhhhhhhhhhhhh...eeeeee......hhhhhh.....hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeeee-....hhhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhhhh..eeeeeeee.....hhhhhhhhhhhhhh..eeeee...hhhhhhhh...hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: E:2-270 UniProt: 3-275                                                                                                                                                                                                                                      PROSITE (1)
                PROSITE (2) ---------------------------------------------------------------------------------------------------------------------------NIFH_FRXC_2   ------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (3) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                PROSITE (4) -------------------------------------------------------------------------------------NIFH_FRXC_1  --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (4)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 E   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 270
                                    11        21        31        41        51        61        71        81        91       101       111       121    | |131       141       151       161       171       181       191       201       211       221       231       241       251       261         
                                                                                                                                                      126 |                                                                                                                                              
                                                                                                                                                        128                                                                                                                                              


Chain F from PDB  Type:PROTEIN  Length:267
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:268
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262        
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLM 270
               SCOP domains d1g21f_ F: Nitrogenase iron protein                                                                                                                                                                                                                                          SCOP domains
               CATH domains 1g21F00 F:2-269 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                                                                                         CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee......hhhhhhhhhhhhhhhh...eeeeee......hhhhhh.....hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeeee-.....hhhhhhhh.....ee..ee..hhhhhhhhhhhhhhhhhhhhhh..ee.eeeee.....hhhhhhhhhhhhhh.eeeeee...hhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: F:2-269 UniProt: 3-275                                                                                                                                                                                                                                     PROSITE (1)
                PROSITE (2) ---------------------------------------------------------------------------------------------------------------------------NIFH_FRXC_2   ----------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                PROSITE (4) -------------------------------------------------------------------------------------NIFH_FRXC_1  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (4)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 F   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLM 269
                                    11        21        31        41        51        61        71        81        91       101       111       121    | |131       141       151       161       171       181       191       201       211       221       231       241       251       261        
                                                                                                                                                      126 |                                                                                                                                             
                                                                                                                                                        128                                                                                                                                             


Chain G from PDB  Type:PROTEIN  Length:268
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:269
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262         
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 271
               SCOP domains d1g21g_ G: Nitrogenase iron protein                                                                                                                                                                                                                                           SCOP domains
               CATH domains 1g21G00 G:2-270 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee......hhhhhhhhhhhhhhhh...eeeeee......hhhhhh.....hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeeee-.....hhhhhhhh.....ee..ee..hhhhhhhhhhhhhhhhhhhhhh..ee..eeee.....hhhhhhhhhhhhhh..eeeee...hhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: G:2-270 UniProt: 3-275                                                                                                                                                                                                                                      PROSITE (1)
                PROSITE (2) ---------------------------------------------------------------------------------------------------------------------------NIFH_FRXC_2   ------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (3) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                PROSITE (4) -------------------------------------------------------------------------------------NIFH_FRXC_1  --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (4)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 G   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 270
                                    11        21        31        41        51        61        71        81        91       101       111       121    | |131       141       151       161       171       181       191       201       211       221       231       241       251       261         
                                                                                                                                                      126 |                                                                                                                                              
                                                                                                                                                        128                                                                                                                                              


Chain H from PDB  Type:PROTEIN  Length:268
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:269
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262         
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 271
               SCOP domains d1g21h_ H: Nitrogenase iron protein                                                                                                                                                                                                                                           SCOP domains
               CATH domains 1g21H00 H:2-270 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee......hhhhhhhhhhhhhhhh...eeeee.......hhhhhh.....hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeee.-.....hhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhhhh..eeeeeeee.....hhhhhhhhhhhhhh..eeeee...hhhhhhhh...hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: H:2-270 UniProt: 3-275                                                                                                                                                                                                                                      PROSITE (1)
                PROSITE (2) ---------------------------------------------------------------------------------------------------------------------------NIFH_FRXC_2   ------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (3) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                PROSITE (4) -------------------------------------------------------------------------------------NIFH_FRXC_1  --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (4)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g21 H   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLME 270
                                    11        21        31        41        51        61        71        81        91       101       111       121    | |131       141       151       161       171       181       191       201       211       221       231       241       251       261         
                                                                                                                                                      126 |                                                                                                                                              
                                                                                                                                                        128
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (3, 8)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (3, 18)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1G21)

(-) Gene Ontology  (11, 31)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,C   (NIFD_AZOVI | P07328)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0018697    carbonyl sulfide nitrogenase activity    Catalysis of the reaction: carbonyl sulfide + 2 H+ + 2 e- = hydrogen sulfide + carbon monoxide.
    GO:0051536    iron-sulfur cluster binding    Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016163    nitrogenase activity    Catalysis of the reaction: 8 reduced ferredoxin + 8 H+ + nitrogen + 16 ATP = 8 oxidized ferredoxin + 2 NH3 + 16 ADP + 16 phosphate.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
    GO:0009399    nitrogen fixation    The process in which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes, such as ammonia, nitrate and nitrogen dioxide.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016612    molybdenum-iron nitrogenase complex    An enzyme complex containing a molybdenum-iron cluster found in many species. It is composed of two proteins, dinitrogenase and nitrogenase reductase; dinitrogenase, the molybdenum-iron protein, is tetrameric with an alpha2-beta2 structure, and nitrogenase reductase is a homodimer.

Chain B,D   (NIFK_AZOVI | P07329)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0018697    carbonyl sulfide nitrogenase activity    Catalysis of the reaction: carbonyl sulfide + 2 H+ + 2 e- = hydrogen sulfide + carbon monoxide.
    GO:0051536    iron-sulfur cluster binding    Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016163    nitrogenase activity    Catalysis of the reaction: 8 reduced ferredoxin + 8 H+ + nitrogen + 16 ATP = 8 oxidized ferredoxin + 2 NH3 + 16 ADP + 16 phosphate.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
    GO:0009399    nitrogen fixation    The process in which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes, such as ammonia, nitrate and nitrogen dioxide.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016612    molybdenum-iron nitrogenase complex    An enzyme complex containing a molybdenum-iron cluster found in many species. It is composed of two proteins, dinitrogenase and nitrogenase reductase; dinitrogenase, the molybdenum-iron protein, is tetrameric with an alpha2-beta2 structure, and nitrogenase reductase is a homodimer.

Chain E,F,G,H   (NIFH1_AZOVI | P00459)
molecular function
    GO:0051539    4 iron, 4 sulfur cluster binding    Interacting selectively and non-covalently with a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands.
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0018697    carbonyl sulfide nitrogenase activity    Catalysis of the reaction: carbonyl sulfide + 2 H+ + 2 e- = hydrogen sulfide + carbon monoxide.
    GO:0051536    iron-sulfur cluster binding    Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016163    nitrogenase activity    Catalysis of the reaction: 8 reduced ferredoxin + 8 H+ + nitrogen + 16 ATP = 8 oxidized ferredoxin + 2 NH3 + 16 ADP + 16 phosphate.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
    GO:0009399    nitrogen fixation    The process in which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes, such as ammonia, nitrate and nitrogen dioxide.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016612    molybdenum-iron nitrogenase complex    An enzyme complex containing a molybdenum-iron cluster found in many species. It is composed of two proteins, dinitrogenase and nitrogenase reductase; dinitrogenase, the molybdenum-iron protein, is tetrameric with an alpha2-beta2 structure, and nitrogenase reductase is a homodimer.

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  1g21
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  NIFD_AZOVI | P07328
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  NIFH1_AZOVI | P00459
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  NIFK_AZOVI | P07329
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        NIFD_AZOVI | P07328: 1fp4 1g20 1l5h 1m1n 1m1y 1m34 1n2c 2afh 2afi 2min 3k1a 3min 3u7q 4nd8 4tku 4tkv 4wna 4wza 4wzb 4xpi 5bvg 5bvh 5cx1
        NIFH1_AZOVI | P00459: 1de0 1fp6 1g1m 1g20 1g5p 1m1y 1m34 1n2c 1nip 1rw4 1xcp 1xd8 1xd9 1xdb 2afh 2afi 2c8v 2nip 4wza 4wzb
        NIFK_AZOVI | P07329: 1fp4 1g20 1l5h 1m1n 1m1y 1m34 1n2c 2afh 2afi 2min 3k1a 3min 3u7q 4nd8 4tku 4tkv 4wna 4wza 4wzb 4xpi 5bvg 5bvh 5cx1

(-) Related Entries Specified in the PDB File

1g20 NUCLEOTIDE-FREE STRUCTURE OF A NITROGENASE COMPLEX BETWEEN L127DEL-FE PROTEIN AND MOFE PROTEIN
1n2c ADP-ALF4- STABILIZED NITROGENASE COMPLEX
2min POX/MOX STATE OF THE NITROGENASE MOFE PROTEIN
2nip NITROGENASE FE PROTEIN
3min PN/MN STATE OF THE NITROGENASE MOFE PROTEIN