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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. D. C. Rees
Date :  16 Oct 00  (Deposition) - 31 Jan 01  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.20
Chains :  Asym./Biol. Unit :  A,B,C,D,E,F,G,H
Keywords :  Nitrogen-Fixation, Fe Protein, Mofe Protein, P-Cluster And Femo Cofactor, 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 Th Mofe-Protein.
Biochemistry V. 40 641 2001
PubMed-ID: 11170380  |  Reference-DOI: 10.1021/BI001645E

(-) 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  (5, 10)

Asymmetric/Biological Unit (5, 10)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION
2CFM2Ligand/IonFE-MO-S CLUSTER
3CLF2Ligand/IonFE(8)-S(7) CLUSTER
4HCA2Ligand/Ion3-HYDROXY-3-CARBOXY-ADIPIC ACID
5SF42Ligand/IonIRON/SULFUR CLUSTER

(-) Sites  (10, 10)

Asymmetric Unit (10, 10)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREARG B:108 , GLU B:109 , HOH B:1499 , ASP D:353 , ASP D:357 , HOH D:3499BINDING SITE FOR RESIDUE CA D 524
02AC2SOFTWAREASP B:353 , ASP B:357 , HOH B:1500 , ARG D:108 , GLU D:109 , HOH D:3500BINDING SITE FOR RESIDUE CA B 524
03AC3SOFTWARELEU 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 E 5290
04AC4SOFTWARELEU C:158 , HOH C:3508 , 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
05AC5SOFTWAREARG A:96 , GLN A:191 , GLY A:424 , ILE A:425 , LYS A:426 , HIS A:442 , CFM A:1496 , HOH A:1502 , HOH A:1509 , HOH A:1511 , HOH A:1522 , HOH A:1529 , HOH A:1544 , HOH A:1561 , HOH A:1570 , HOH A:1626BINDING SITE FOR RESIDUE HCA A 1494
06AC6SOFTWAREARG C:96 , GLN C:191 , GLY C:424 , ILE C:425 , LYS C:426 , HIS C:442 , CFM C:3496 , HOH C:3530 , HOH C:3565 , HOH C:3587 , HOH C:3598BINDING SITE FOR RESIDUE HCA C 3494
07AC7SOFTWAREVAL A:70 , ARG A:96 , HIS A:195 , TYR A:229 , CYS A:275 , SER A:278 , GLY A:356 , GLY A:357 , ARG A:359 , PHE A:381 , HIS A:442 , HCA A:1494BINDING SITE FOR RESIDUE CFM A 1496
08AC8SOFTWAREARG C:96 , HIS C:195 , TYR C:229 , CYS C:275 , GLY C:356 , GLY C:357 , ARG C:359 , PHE C:381 , HIS C:442 , HCA C:3494BINDING SITE FOR RESIDUE CFM C 3496
09AC9SOFTWARECYS A:62 , TYR A:64 , PRO A:85 , GLY A:87 , CYS A:88 , TYR A:91 , CYS A:154 , GLY A:185 , CYS B:70 , SER B:92 , GLY B:94 , CYS B:95 , TYR B:98 , CYS B:153 , SER B:188BINDING SITE FOR RESIDUE CLF B 1498
10BC1SOFTWARECYS C:62 , TYR C:64 , PRO C:85 , GLY C:87 , CYS C:88 , CYS C:154 , GLY C:185 , CYS D:70 , PRO D:72 , SER D:92 , CYS D:95 , TYR D:98 , CYS D:153 , SER D:188BINDING SITE FOR RESIDUE CLF D 3498

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1G20)

(-) Cis Peptide Bonds  (6, 6)

Asymmetric/Biological Unit
No.Residues
1Gly A:448 -Pro A:449
2Tyr B:12 -Pro B:13
3Phe B:471 -Pro B:472
4Gly C:448 -Pro C:449
5Tyr D:12 -Pro D:13
6Phe D:471 -Pro D:472

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1G20)

(-) PROSITE Motifs  (5, 20)

Asymmetric/Biological Unit (5, 20)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1NIFH_FRXC_3PS51026 NIFH_FRXC family profile.NIFH1_AZOVI3-275
 
 
 		  4E:2-271
F:2-271
G:2-271
H:2-271
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 1G20)

(-) 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 d1g20a_ A: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 1g20A01 A:5-62,A:345-479                                  1g20A02 A:63-205 Nitrogenase molybdenum iron protein domain                                                                                    1g20A03 A:206-320 Nitrogenase molybdenum iron protein domain                                                       ------------------------1g20A01 A:5-62,A:345-479 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhh..hhhhhhhhhh.eee......hhhhh................hhhhhhh..........eeeee..hhhhhhh.....................ee...hhhhhhhhhhhhhhhhhhhhhhhh.....eeeeehhhhhhhh.hhhhhhhhhhhhhh..eeee.........hhhhhhhhhhhhhhhhhhhhh..........eeeeeee...hhhhhhhhhhhhhh..eeeeeee...hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhhhh..eee....hhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..eeee....hhhhhhhhhhhh...eeeeeee...hhhhhhhhhhhh....eeee..hhhhhhhhhhhhh..eeeehhhhhhhhhhh...eee..hhhhh...hhhhhhhhhhhhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) ---------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g20 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 d1g20b_ B: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SCOP domains
               CATH domains --------------------------------------------------------------------1g20B01 B:70-215 Nitrogenase molybdenum iron protein domain                                                                                       1g20B02 B:216-320 Nitrogenase molybdenum iron protein domain                                             1g20B04 B:321-364,B:485-523                 1g20B03 B:365-470 Nitrogenase molybdenum iron protein domain                                              --------------1g20B04 B:321-364,B:485-523             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ........hhhhhh.hhhhhhhhhhhhhhhh...hhhhhhhhhhhh.hhhhhhhhhh....ee.....hhhhhhhhhhh....eeeeee..hhhhhhhhhhhhhhhh.....ee...hhhhhhhhhhhhhhhhhhhhhhhhh..eeeeeehhhhhhh..hhhhhhhhhhhh...................hhhhhhhhhhhhhhhhhhh.hhhhh.......eeee.....hhhhhhhhhhhhhhhh..eee.....hhhhh.............hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhh...........hhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhh..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
                 1g20 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 d1g20c_ C: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 1g20C01 C:5-62,C:345-479                                  1g20C02 C:63-205 Nitrogenase molybdenum iron protein domain                                                                                    1g20C03 C:206-320 Nitrogenase molybdenum iron protein domain                                                       ------------------------1g20C01 C:5-62,C:345-479 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhh..hhhhhhhhhh.eee......hhhhh................hhhhhhh..........eeeee..hhhhhhhh....................ee...hhhhhhh.hhhhhhhhhhhhhhhh.....eeeeehhhhhhhh.hhhhhhhhhhhhhh..eeee.........hhhhhhhhhhhhhhhh...............eeeeeee....hhhhhhhhhhhhh..eeeeeee...hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhhhh..eee....hhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..eeee....hhhhhhhhhhhh...eeeeeee...hhhhhhhhhhhh....eeee..hhhhhhhhhhhhh..eeeehhhhhhhhhhh...eee..hhhhh...hhhhhhhhhhhhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------NITROGEN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) ---------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g20 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 d1g20d_ D: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SCOP domains
               CATH domains --------------------------------------------------------------------1g20D01 D:70-215 Nitrogenase molybdenum iron protein domain                                                                                       1g20D02 D:216-320 Nitrogenase molybdenum iron protein domain                                             1g20D04 D:321-364,D:485-523                 1g20D03 D:365-470 Nitrogenase molybdenum iron protein domain                                              --------------1g20D04 D:321-364,D:485-523             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ........hhhhhh.hhhhhhhhhhhhhhhh...hhhhhhhhhhhh.hhhhhhhhhh....ee.....hhhhhhhhhhhh...eeeeee.hhhhhhhhhhhhhhhhh.....ee...hhhhhhhhhhhhhhhhhhhhhhhhh..eeeeeehhhhhhh..hhhhhhhhhhhh...................hhhhhhhhhhhhhhhhhhh.hhhhh.......eeee.....hhhhhhhhhhhhhhhh..eee.......................hhhhhhhhhhh.eeee.hhhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhh..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
                 1g20 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:259
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:270
                                    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       272
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 272
               SCOP domains d1g20e_ E: Nitrogenase iron protein                                                                                                                                                                                                                                            SCOP domains
               CATH domains 1g20E00 E:2-271 P-loop containing nucleotide tri     phosphate hydrolases                                                                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeee.hhhhhhhhhhhhhhhhhhhh...eeeeee...........-----.hhhhhhhhh.hhhhhhhhhhh..hhhhheeee.........hhhhhhhhhhhhhhhh...---..eeeeee-.....hhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhhhh..eeeeeeee....--hhhhhhhhhhhhh..eeeee..hhhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: E:2-271 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
                 1g20 E   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLIL-----NTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAY---LDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNT--EDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 271
                                    11        21        31        41       | -   |    61        71        81        91       101       111   |   121    | |131       141       151       161       171       181       | -|      201       211       221       231       241       251       261       271
                                                                          49    55                                                         115 119    126 |                                                          189  |                                                                               
                                                                                                                                                        128                                                             192                                                                               


Chain F from PDB  Type:PROTEIN  Length:260
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:270
                                    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       272
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 272
               SCOP domains d1g20f_ F: Nitrogenase iron protein                                                                                                                                                                                                                                            SCOP domains
               CATH domains 1g20F00 F:2-271 P-loop containing nucleotide tri     phosphate hydrolases                                                                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeeee....hhhhhhhhhhhhhhhh...eeeeee...........-----.hhhhhhhhhhhhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeeee-.....hhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhh....eeeeeeee.----hhhhhhhhhhhhhh..eeeee..hhhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: F:2-271 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
                 1g20 F   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLIL-----NTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNS----REDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 271
                                    11        21        31        41       | -   |    61        71        81        91       101       111       121    | |131       141       151       161       171       181    |  191       201       211       221       231       241       251       261       271
                                                                          49    55                                                                    126 |                                                       186  191                                                                                
                                                                                                                                                        128                                                                                                                                               


Chain G from PDB  Type:PROTEIN  Length:257
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:270
                                    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       272
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 272
               SCOP domains d1g20g_ G: Nitrogenase iron protein                                                                                                                                                                                                                                            SCOP domains
               CATH domains 1g20G00 G:2-271 P-loop containing nucleotide tri     phosphate hydrolases                                                                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeeee....hhhhhhhhhhhhhhhh...eeeeee...........-----.hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhhh..---..eeeeee-.....hhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhhhh..eeeeeee..----hhhhhhhhhhhhhh..eeee...hhhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: G:2-271 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
                 1g20 G   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLIL-----NTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAY---LDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNS----REDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 271
                                    11        21        31        41       | -   |    61        71        81        91       101       111   |   121    | |131       141       151       161       171       181    |  191       201       211       221       231       241       251       261       271
                                                                          49    55                                                         115 119    126 |                                                       186  191                                                                                
                                                                                                                                                        128                                                                                                                                               


Chain H from PDB  Type:PROTEIN  Length:262
 aligned with NIFH1_AZOVI | P00459 from UniProtKB/Swiss-Prot  Length:290

    Alignment length:270
                                    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       272
          NIFH1_AZOVI     3 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 272
               SCOP domains d1g20h_ H: Nitrogenase iron protein                                                                                                                                                                                                                                            SCOP domains
               CATH domains 1g20H00 H:2-271 P-loop containing nucleotide trip    hosphate hydrolases                                                                                                                                                                                                       CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeeee....hhhhhhhhhhhhhhhhh..eeeeee............----.hhhhhhhhh.hhhhhhhhhhhee.hhh.eeee.........hhhhhhhhhhhhhhhh........eeeeee-.....hhhhhhhh.....eeeeee..hhhhhhhhhhhhhhhhhhhh....eeeeeeee..---.hhhhhhhhhhhhh..eeeee...hhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhh.........hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) NIFH_FRXC_3  PDB: H:2-271 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
                 1g20 H   2 MRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILH----NTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDV-GDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSR---REDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEF 271
                                    11        21        31        41        |-   |    61        71        81        91       101       111       121    | |131       141       151       161       171       181     | 191       201       211       221       231       241       251       261       271
                                                                           50   55                                                                    126 |                                                        187 191                                                                                
                                                                                                                                                        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 1G20)

(-) 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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  1g20
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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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  1.18.6.1
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 Related Entries

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

UniProtKB/Swiss-Prot
        NIFD_AZOVI | P07328: 1fp4 1g21 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 1g21 1g5p 1m1y 1m34 1n2c 1nip 1rw4 1xcp 1xd8 1xd9 1xdb 2afh 2afi 2c8v 2nip 4wza 4wzb
        NIFK_AZOVI | P07329: 1fp4 1g21 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

1g21 NUCLEOTIDE-COMPLEXED 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