1QH1 - JenaLib

Asym./Biol. Unit (Jmol Viewer)

Asym./Biol. Unit - sites (Jmol Viewer)

Title :   NITROGENASE MOFE PROTEIN FROM KLEBSIELLA PNEUMONIAE, PHENOSAFRANIN OXIDIZED STATE

Authors :   S. M. Mayer, D. M. Lawson, C. A. Gormal, S. M. Roe, B. E. Smith

Date :   10 May 99 (Deposition) - 01 Nov 99 (Release) - 05 May 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.60

Chains :   Asym./Biol. Unit : A,B,C,D

Keywords :   Biological Nitrogen Fixation, Nitrogen Metabolism, Molybdoenzymes, Electron Transfer, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. M. Mayer, D. M. Lawson, C. A. Gormal, S. M. Roe, B. E. Smith
New Insights Into Structure-Function Relationships In Nitrogenase: A 1. 6 A Resolution X-Ray Crystallographic Study Of Klebsiella Pneumoniae Mofe-Protein.
J. Mol. Biol. V. 292 871 1999
PubMed-ID: 10525412 | Reference-DOI: 10.1006/JMBI.1999.3107
(for further references see the PDB file header)

Molecule 1 - PROTEIN (NITROGENASE MOLYBDENUM IRON PROTEIN)
	Cellular Location	:	CYTOPLASM
	Chains	:	A, C
	EC Number	:	1.18.6.1
	Organism Scientific	:	KLEBSIELLA PNEUMONIAE
	Organism Taxid	:	573
	Other Details	:	CHAINS A AND C ARE ALPHA-SUBUNITS.
	Other Details - Source	:	ALSO KNOWN AS KLEBSIELLA PNEUMONIAE OXYTOCA.
	Strain	:	M5A1
	Synonym	:	NITROGENASE COMPONENT 1
	Variant	:	WILD-TYPE

Molecule 2 - PROTEIN (NITROGENASE MOLYBDENUM IRON PROTEIN)
	Cellular Location	:	CYTOPLASM
	Chains	:	B, D
	EC Number	:	1.18.6.1
	Organism Scientific	:	KLEBSIELLA PNEUMONIAE
	Organism Taxid	:	573
	Other Details	:	CHAINS B AND D ARE BETA-SUBUNITS.
	Other Details - Source	:	ALSO KNOWN AS KLEBSIELLA PNEUMONIAE OXYTOCA.
	Strain	:	M5A1
	Synonym	:	NITROGENASE COMPONENT 1
	Variant	:	WILD-TYPE

		1	2	3	4
Asymmetric/Biological Unit	:	A	B	C	D

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (6, 28)

No.	Name	Count	Type	Full Name
1	CFM	2	Ligand/Ion	FE-MO-S CLUSTER
2	CL	2	Ligand/Ion	CHLORIDE ION
3	CLF	2	Ligand/Ion	FE(8)-S(7) CLUSTER
4	EDO	13	Ligand/Ion	1,2-ETHANEDIOL
5	HCA	2	Ligand/Ion	3-HYDROXY-3-CARBOXY-ADIPIC ACID
6	MG	7	Ligand/Ion	MAGNESIUM ION

Asymmetric Unit (28, 28)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	ASN B:395 , TRP B:398	BINDING SITE FOR RESIDUE CL B 2771
02	AC2	SOFTWARE	ASN D:395 , HOH D:3089 , HOH D:3109	BINDING SITE FOR RESIDUE CL D 2772
03	AC3	SOFTWARE	HOH A:3587 , HOH A:3588 , HOH A:3589 , HOH A:3590 , HOH B:3727 , HOH B:3728	BINDING SITE FOR RESIDUE MG A 3001
04	AC4	SOFTWARE	ASP B:349 , ASP B:353 , HOH B:3729 , LYS D:106 , GLU D:107 , HOH D:3755	BINDING SITE FOR RESIDUE MG B 3002
05	AC5	SOFTWARE	HOH B:3730 , HOH B:3731 , HOH B:3732 , HOH B:3733 , HOH B:3734 , HOH B:3735	BINDING SITE FOR RESIDUE MG B 3003
06	AC6	SOFTWARE	ASP B:407 , HOH B:3736 , HOH B:3737 , HOH B:3738 , HOH B:3739 , HOH B:3740	BINDING SITE FOR RESIDUE MG B 3004
07	AC7	SOFTWARE	HOH C:3027 , HOH C:3028 , HOH C:3029 , HOH D:3756 , HOH D:3757 , HOH D:3758	BINDING SITE FOR RESIDUE MG C 3005
08	AC8	SOFTWARE	LYS B:106 , GLU B:107 , HOH B:3741 , ASP D:349 , ASP D:353 , HOH D:3759	BINDING SITE FOR RESIDUE MG D 3006
09	AC9	SOFTWARE	HOH D:3760 , HOH D:3761 , HOH D:3762 , HOH D:3763 , HOH D:3764 , HOH D:3765	BINDING SITE FOR RESIDUE MG D 3007
10	BC1	SOFTWARE	ALA A:64 , ARG A:95 , GLN A:190 , GLY A:422 , ILE A:423 , HIS A:440 , CFM A:503 , HOH A:3003 , HOH A:3005 , HOH A:3012 , HOH A:3024 , HOH A:3038 , HOH A:3047 , HOH A:3569 , HOH A:3570 , HOH A:3571 , HOH B:3032	BINDING SITE FOR RESIDUE HCA A 501
11	BC2	SOFTWARE	VAL A:69 , ARG A:95 , HIS A:194 , TYR A:227 , CYS A:273 , GLY A:354 , GLY A:355 , LEU A:356 , ARG A:357 , PHE A:379 , HIS A:440 , HCA A:501	BINDING SITE FOR RESIDUE CFM A 503
12	BC3	SOFTWARE	CYS A:61 , TYR A:63 , PRO A:84 , GLY A:86 , CYS A:87 , TYR A:90 , CYS A:153 , GLY A:184 , CYS B:68 , SER B:90 , GLY B:92 , CYS B:93 , TYR B:96 , CYS B:151 , SER B:186	BINDING SITE FOR RESIDUE CLF A 505
13	BC4	SOFTWARE	ALA C:64 , ARG C:95 , GLN C:190 , GLY C:422 , ILE C:423 , HIS C:440 , CFM C:503 , HOH C:1322 , HOH C:1326 , HOH C:1331 , HOH C:1335 , HOH C:1336 , HOH C:1344 , HOH C:1865 , HOH C:1874 , HOH C:1906 , HOH D:3036	BINDING SITE FOR RESIDUE HCA C 501
14	BC5	SOFTWARE	VAL C:69 , ARG C:95 , HIS C:194 , TYR C:227 , CYS C:273 , GLY C:354 , GLY C:355 , LEU C:356 , ARG C:357 , PHE C:379 , HIS C:440 , HCA C:501	BINDING SITE FOR RESIDUE CFM C 503
15	BC6	SOFTWARE	CYS C:61 , TYR C:63 , PRO C:84 , GLY C:86 , CYS C:87 , TYR C:90 , CYS C:153 , GLY C:184 , CYS D:68 , SER D:90 , GLY D:92 , CYS D:93 , TYR D:96 , CYS D:151 , SER D:186	BINDING SITE FOR RESIDUE CLF C 505
16	BC7	SOFTWARE	ASP A:443 , THR D:356 , TRP D:357 , HOH D:3008 , HOH D:3009	BINDING SITE FOR RESIDUE EDO D 2773
17	BC8	SOFTWARE	LYS A:75 , THR A:100 , ASP A:254 , HOH A:3579 , PHE B:23 , GLU B:30 , HOH B:3727	BINDING SITE FOR RESIDUE EDO A 2774
18	BC9	SOFTWARE	ALA A:93 , ARG A:95 , ASN A:97 , TYR A:98 , THR A:110 , HOH A:3121 , HOH D:3063	BINDING SITE FOR RESIDUE EDO A 2775
19	CC1	SOFTWARE	ASN A:208 , ARG A:209 , GLU A:261 , HOH A:3243 , GLN D:36 , HOH D:3318 , HOH D:3727	BINDING SITE FOR RESIDUE EDO A 2776
20	CC2	SOFTWARE	LYS A:267 , GLN A:313 , PHE A:314 , HOH A:3281 , HOH A:3288	BINDING SITE FOR RESIDUE EDO A 2777
21	CC3	SOFTWARE	LYS B:237 , SER B:248 , LEU B:249 , ASP B:252 , GLU B:276 , HOH B:3525	BINDING SITE FOR RESIDUE EDO B 2778
22	CC4	SOFTWARE	LEU B:501 , SER B:514 , ARG B:519 , HOH B:3712 , TYR C:444 , SER D:9 , CYS D:10	BINDING SITE FOR RESIDUE EDO B 2779
23	CC5	SOFTWARE	GLN B:448 , ARG B:464 , ARG B:472 , ASP D:502 , SER D:503 , PHE D:515 , HOH D:3165 , HOH D:3226	BINDING SITE FOR RESIDUE EDO D 2780
24	CC6	SOFTWARE	THR B:356 , TRP B:357 , HOH B:3705 , HOH B:3707 , ASP C:443 , TYR C:444	BINDING SITE FOR RESIDUE EDO B 2781
25	CC7	SOFTWARE	PRO C:176 , ASN C:208 , ARG C:209 , GLU C:261 , HOH C:1479 , HOH C:1497	BINDING SITE FOR RESIDUE EDO C 2782
26	CC8	SOFTWARE	LYS D:237 , SER D:248 , LEU D:249 , ASP D:252 , GLU D:276 , HOH D:3332	BINDING SITE FOR RESIDUE EDO D 2783
27	CC9	SOFTWARE	TYR A:444 , CYS B:10 , LEU D:501 , SER D:514 , ARG D:519	BINDING SITE FOR RESIDUE EDO D 2784
28	DC1	SOFTWARE	ASN D:54 , PHE D:55 , ARG D:57 , CYS D:421 , HIS D:425	BINDING SITE FOR RESIDUE EDO D 2785

(no "SS Bond" information available for 1QH1)

Asymmetric/Biological Unit

No.	Residues
1	Trp A:251	-	Ser A:252
2	Gly A:446	-	Pro A:447
3	Tyr B:11	-	Pro B:12
4	Phe B:467	-	Pro B:468
5	Trp C:251	-	Ser C:252
6	Gly C:446	-	Pro C:447
7	Tyr D:11	-	Pro D:12
8	Phe D:467	-	Pro D:468

(no "SAP(SNP)/Variant" information available for 1QH1)

Asymmetric/Biological Unit (2, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	NITROGENASE_1_1	PS00699	Nitrogenases component 1 alpha and beta subunits signature 1.	NIFD_KLEPN	82-89	2	A:80-87 C:80-87
1	NITROGENASE_1_1	PS00699		NIFK_KLEPN	87-94	2	B:86-93 D:86-93
2	NITROGENASE_1_2	PS00090	Nitrogenases component 1 alpha and beta subunits signature 2.	NIFK_KLEPN	150-164	2	B:149-163 D:149-163
2	NITROGENASE_1_2	PS00090		NIFD_KLEPN	153-167	2	A:151-165 C:151-165

(no "Exon" information available for 1QH1)

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:478
 aligned with NIFD_KLEPN | P00466 from UniProtKB/Swiss-Prot  Length:483

    Alignment length:478
                                    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       282       292       302       312       322       332       342       352       362       372       382       392       402       412       422       432       442       452       462       472        
           NIFD_KLEPN     3 TNATGERNLALIQEVLEVFPETARKERRKHMMVSDPKMKSVGKCIISNRKSQPGVMTVRGCAYAGSKGVVFGPIKDMAHISHGPAGCGQYSRAERRNYYTGVSGVDSFGTLNFTSDFQERDIVFGGDKKLSKLIEEMELLFPLTKGITIQSECPVGLIGDDISAVANASSKALDKPVIPVRCEGFRGVSQSLGHHIANDVVRDWILNNREGQPFETTPYDVAIIGDYNIGGDAWASRILLEEMGLRVVAQWSGDGTLVEMENTPFVKLNLVHCYRSMNYIARHMEEKHQIPWMEYNFFGPTKIAESLRKIADQFDDTIRANAEAVIARYEGQMAAIIAKYRPRLEGRKVLLYMGGLRPRHVIGAYEDLGMEIIAAGYEFAHNDDYDRTLPDLKEGTLLFDDASSYELEAFVKALKPDLIGSGIKEKYIFQKMGVPFRQMHSWDYSGPYHGYDGFAIFARDMDMTLNNPAWNELTAPWL 480
               SCOP domains d1qh1a_ A: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                    SCOP domains
               CATH domains 1qh1A01 A:1-61,A:343-477                                     1qh1A02 A:62-204 Nitrogenase molybdenum iron protein domain                                                                                    1qh1A03 A:205-318 Nitrogenase molybdenum iron protein domain                                                      ------------------------1qh1A01 A:1-61,A:343-477 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhh..hhhhhhhhhheee............................hhhhh..........eeeeee...hhhhh............................hhhhhh..hhhhhhhhhhhhhh.....eeeeee..hhhhh...hhhhhhhhhhhh..eeeee.........hhhhhhhhhhhhhhh...............eeeee....hhh..hhhhhhhhh...eeeeee.....hhhhh.hhh..eeee..hhhhhhhhhhhhhhh..eeee....hhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eeeeee...hhhh.hhhhhhh..eeeeeee....hhhhhhhhhh.....eeee...hhhhhhhhhhh...eeee.hhhhhhhhh...eeee...hhh.....hhhhhhhhhhhhhhhh..hhhhh...... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -------------------------------------------------------------------------------NITROGEN------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) ------------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qh1 A   1 TNATGERNLALIQEVLEVFPETARKERRKHMMVSDPKMKSVGKCIISNRKSQPGVMTVRGCAYAGSKGVVFGPIKDMAHISHGPVGCGQYSRAGRRNYYTGVSGVDSFGTLNFTSDFQERDIVFGGDKKLSKLIEEMELLFPLTKGITIQSECPVGLIGDDISAVANASSKALDKPVIPVRCEGFRGVSQSLGHHIANDVVRDWILNNREGQPFETTPYDVAIIGDYNIGGDAWASRILLEEMGLRVVAQWSGDGTLVEMENTPFVKLNLVHCYRSMNYIARHMEEKHQIPWMEYNFFGPTKIAESLRKIADQFDDTIRANAEAVIARYEGQMAAIIAKYRPRLEGRKVLLYMGGLRPRHVIGAYEDLGMEIIAAGYEFAHNDDYDRTLPDLKEGTLLFDDASSYELEAFVKALKPDLIGSGIKEKYIFQKMGVPFRQMHSWDYSGPYHGYDGFAIFARDMDMTLNNPAWNELTAPWL 478
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470

Chain B from PDB  Type:PROTEIN  Length:519
 aligned with NIFK_KLEPN | P09772 from UniProtKB/Swiss-Prot  Length:520

    Alignment length:519
                                    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         
           NIFK_KLEPN     2 SQTIDKINSCYPLFEQDEYQELFRNKRQLEEAHDAQRVQEVFAWTTTAEYEALNFRREALTVDPAKACQPLGAVLCSLGFANTLPYVHGSQGCVAYFRTYFNRHFKEPIACVSDSMTEDAAVFGGNNNMNLGLQNASALYKPEIIAVSTTCMAEVIGDDLQAFIANAKKDGFVDSSIAVPHAHTPSFIGSHVTGWDNMFEGFAKTFTADYQGQPGKLPKLNLVTGFETYLGNFRVLKRMMEQMAVPCSLLSDPSEVLDTPADGHYRMYSGGTTQQEMKEAPDAIDTLLLQPWQLLKSKKVVQEMWNQPATEVAIPLGLAATDELLMTVSQLSGKPIADALTLERGRLVDMMLDSHTWLHGKKFGLYGDPDFVMGLTRFLLELGCEPTVILSHNANKRWQKAMNKMLDASPYGRDSEVFINCDLWHFRSLMFTRQPDFMIGNSYGKFIQRDTLAKGKAFEVPLIRLGFPLFDRHHLHRQTTWGYEGAMNIVTTLVNAVLEKLDSDTSQLGKTDYSFDLVR 520
               SCOP domains d1qh1b_ B: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains -------------------------------------------------------------------1qh1B01 B:68-211 Nitrogenase molybdenum iron protein domain                                                                                     1qh1B02 B:212-316 Nitrogenase molybdenum iron protein domain                                             1qh1B04 B:317-360,B:481-519                 1qh1B03 B:361-466 Nitrogenase molybdenum iron protein domain                                              --------------1qh1B04 B:317-360,B:481-519             CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhh.hhhhhhhhhhhhh.....hhhhhhhhhhhh.hhhhhhhhh............hhhhhhhhhhh...eeeeee..hhhhhhhhhhhhhhh............hhhhhh..hhhhhhhhhhhhhhh...eeeeee.hhhhhh...hhhhhhhhhh.....................hhhhhhhhhhhhhhhhh...........eeeee......hhhhhhhhhhhhhh..eeee........................hhhhh.hhh..eeee......hhhhhhhhh..............hhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhh...eeeee..hhhhhhhhhhhhh...eeeeeee....hhhhhhhhhhhhh.......eeee...hhhhhhhhhhh...eeee.hhhhhhhhhhhhh.hhh..eeee..........hhh....hhhhhhhhhhhhhhhhhhhhhhh.......hhh..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) -------------------------------------------------------------------------------------NITROGEN------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (1) ----------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qh1 B   1 SQTIDKINSCYPLFEQDEYQELFRNKRQLEEAHDAQRVQEVFAWTTTAEYEALNFRREALTVDPAKACQPLGAVLCSLGFANTLPYVHGSQGCVAYFRTYFNRHFKEPIACVSDSMTEDAAVFGGNNNMNLGLQNASALYKPEIIAVSTTCMAEVIGDDLQAFIANAKKDGFVDSSIAVPHAHTPSFIGSHVTGWDNMFEGFAKTFTADYQGQPGKLPKLNLVTGFETYLGNFRVLKRMMEQMAVPCSLLSDPSEVLDTPADGHYRMYSGGTTQQEMKEAPDAIDTLLLQPWQLLKSKKVVQEMWNQPATEVAIPLGLAATDELLMTVSQLSGKPIADALTLERGRLVDMMLDSHTWLHGKKFGLYGDPDFVMGLTRFLLELGCEPTVILSHNANKRWQKAMNKMLDASPYGRDSEVFINCDLWHFRSLMFTRQPDFMIGNSYGKFIQRDTLAKGKAFEVPLIRLGFPLFDRHHLHRQTTWGYEGAMNIVTTLVNAVLEKLDSDTSQLGKTDYSFDLVR 519
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510

Chain C from PDB  Type:PROTEIN  Length:478
 aligned with NIFD_KLEPN | P00466 from UniProtKB/Swiss-Prot  Length:483

    Alignment length:478
                                    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       282       292       302       312       322       332       342       352       362       372       382       392       402       412       422       432       442       452       462       472        
           NIFD_KLEPN     3 TNATGERNLALIQEVLEVFPETARKERRKHMMVSDPKMKSVGKCIISNRKSQPGVMTVRGCAYAGSKGVVFGPIKDMAHISHGPAGCGQYSRAERRNYYTGVSGVDSFGTLNFTSDFQERDIVFGGDKKLSKLIEEMELLFPLTKGITIQSECPVGLIGDDISAVANASSKALDKPVIPVRCEGFRGVSQSLGHHIANDVVRDWILNNREGQPFETTPYDVAIIGDYNIGGDAWASRILLEEMGLRVVAQWSGDGTLVEMENTPFVKLNLVHCYRSMNYIARHMEEKHQIPWMEYNFFGPTKIAESLRKIADQFDDTIRANAEAVIARYEGQMAAIIAKYRPRLEGRKVLLYMGGLRPRHVIGAYEDLGMEIIAAGYEFAHNDDYDRTLPDLKEGTLLFDDASSYELEAFVKALKPDLIGSGIKEKYIFQKMGVPFRQMHSWDYSGPYHGYDGFAIFARDMDMTLNNPAWNELTAPWL 480
               SCOP domains d1qh1c_ C: Nitrogenase iron-molybdenum protein, alpha chain                                                                                                                                                                                                                                                                                                                                                                                                                                    SCOP domains
               CATH domains 1qh1C01 C:1-61,C:343-477                                     1qh1C02 C:62-204 Nitrogenase molybdenum iron protein domain                                                                                    1qh1C03 C:205-318 Nitrogenase molybdenum iron protein domain                                                      ------------------------1qh1C01 C:1-61,C:343-477 Nitrogenase molybdenum iron protein domain                                                                    - CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhh..hhhhhhhhhheee............................hhhhh..........eeeeee...hhhhh............................hhhhhh..hhhhhhhhhhhhhh.....eeeeee..hhhh....hhhhhhhhhhhh..eeeee.........hhhhhhhhhhhhhhh...............eeeee....hhh..hhhhhhhhh...eeeeee.....hhhhh.hhh..eeee..hhhhhhhhhhhhhhh..eeee.....hhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eeeeee...hhhh.hhhhhhh..eeeeeee....hhhhhhhhhh.....eeee...hhhhhhhhhhh...eeee.hhhhhhhhh...eeee...hhh.....hhhhhhhhhhhhhhhh..hhhh....... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -------------------------------------------------------------------------------NITROGEN------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) ------------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qh1 C   1 TNATGERNLALIQEVLEVFPETARKERRKHMMVSDPKMKSVGKCIISNRKSQPGVMTVRGCAYAGSKGVVFGPIKDMAHISHGPVGCGQYSRAGRRNYYTGVSGVDSFGTLNFTSDFQERDIVFGGDKKLSKLIEEMELLFPLTKGITIQSECPVGLIGDDISAVANASSKALDKPVIPVRCEGFRGVSQSLGHHIANDVVRDWILNNREGQPFETTPYDVAIIGDYNIGGDAWASRILLEEMGLRVVAQWSGDGTLVEMENTPFVKLNLVHCYRSMNYIARHMEEKHQIPWMEYNFFGPTKIAESLRKIADQFDDTIRANAEAVIARYEGQMAAIIAKYRPRLEGRKVLLYMGGLRPRHVIGAYEDLGMEIIAAGYEFAHNDDYDRTLPDLKEGTLLFDDASSYELEAFVKALKPDLIGSGIKEKYIFQKMGVPFRQMHSWDYSGPYHGYDGFAIFARDMDMTLNNPAWNELTAPWL 478
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470

Chain D from PDB  Type:PROTEIN  Length:519
 aligned with NIFK_KLEPN | P09772 from UniProtKB/Swiss-Prot  Length:520

    Alignment length:519
                                    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         
           NIFK_KLEPN     2 SQTIDKINSCYPLFEQDEYQELFRNKRQLEEAHDAQRVQEVFAWTTTAEYEALNFRREALTVDPAKACQPLGAVLCSLGFANTLPYVHGSQGCVAYFRTYFNRHFKEPIACVSDSMTEDAAVFGGNNNMNLGLQNASALYKPEIIAVSTTCMAEVIGDDLQAFIANAKKDGFVDSSIAVPHAHTPSFIGSHVTGWDNMFEGFAKTFTADYQGQPGKLPKLNLVTGFETYLGNFRVLKRMMEQMAVPCSLLSDPSEVLDTPADGHYRMYSGGTTQQEMKEAPDAIDTLLLQPWQLLKSKKVVQEMWNQPATEVAIPLGLAATDELLMTVSQLSGKPIADALTLERGRLVDMMLDSHTWLHGKKFGLYGDPDFVMGLTRFLLELGCEPTVILSHNANKRWQKAMNKMLDASPYGRDSEVFINCDLWHFRSLMFTRQPDFMIGNSYGKFIQRDTLAKGKAFEVPLIRLGFPLFDRHHLHRQTTWGYEGAMNIVTTLVNAVLEKLDSDTSQLGKTDYSFDLVR 520
               SCOP domains d1qh1d_ D: Nitrogenase iron-molybdenum protein, beta chain                                                                                                                                                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains -------------------------------------------------------------------1qh1D01 D:68-211 Nitrogenase molybdenum iron protein domain                                                                                     1qh1D02 D:212-316 Nitrogenase molybdenum iron protein domain                                             1qh1D04 D:317-360,D:481-519                 1qh1D03 D:361-466 Nitrogenase molybdenum iron protein domain                                              --------------1qh1D04 D:317-360,D:481-519             CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhh.hhhhhhhhhhhhh.....hhhhhhhhhhhh.hhhhhhhhh............hhhhhhhhhhh...eeeeee..hhhhhhhhhhhhhhh.....eee....hhhhhh..hhhhhhhhhhhhhhh...eeeeee.hhhhhh...hhhhhhhhhh.....................hhhhhhhhhhhhhhhhh............eeee......hhhhhhhhhhhhhh...eee........................hhhhh.hhh..eeee......hhhhhhhhh..............hhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhh...eeeee..hhhhhhhhhhhhh...eeeeeee....hhhhhhhhhhhh........eeee...hhhhhhhhhh....eeee.hhhhhhhhhhhhh.hhh..eeee..........hhh....hhhhhhhhhhhhhhhhhhhhhhh.......hhh..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) -------------------------------------------------------------------------------------NITROGEN------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (1) ----------------------------------------------------------------------------------------------------------------------------------------------------NITROGENASE_1_2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qh1 D   1 SQTIDKINSCYPLFEQDEYQELFRNKRQLEEAHDAQRVQEVFAWTTTAEYEALNFRREALTVDPAKACQPLGAVLCSLGFANTLPYVHGSQGCVAYFRTYFNRHFKEPIACVSDSMTEDAAVFGGNNNMNLGLQNASALYKPEIIAVSTTCMAEVIGDDLQAFIANAKKDGFVDSSIAVPHAHTPSFIGSHVTGWDNMFEGFAKTFTADYQGQPGKLPKLNLVTGFETYLGNFRVLKRMMEQMAVPCSLLSDPSEVLDTPADGHYRMYSGGTTQQEMKEAPDAIDTLLLQPWQLLKSKKVVQEMWNQPATEVAIPLGLAATDELLMTVSQLSGKPIADALTLERGRLVDMMLDSHTWLHGKKFGLYGDPDFVMGLTRFLLELGCEPTVILSHNANKRWQKAMNKMLDASPYGRDSEVFINCDLWHFRSLMFTRQPDFMIGNSYGKFIQRDTLAKGKAFEVPLIRLGFPLFDRHHLHRQTTWGYEGAMNIVTTLVNAVLEKLDSDTSQLGKTDYSFDLVR 519
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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 '\|'

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Rossmann fold (7312)

Homologous Superfamily: Nitrogenase molybdenum iron protein domain (45)

Klebsiella pneumoniae. Organism_taxid: 573. Strain: m5a1. Variant: wild-type. (3)

1a	1qh1A02	A:62-204
1b	1qh1A03	A:205-318
1c	1qh1C03	C:205-318
1d	1qh1B03	B:361-466
1e	1qh1D03	D:361-466
1f	1qh1B02	B:212-316
1g	1qh1D02	D:212-316
1h	1qh1C02	C:62-204
1i	1qh1A01	A:1-61,A:343-477
1j	1qh1C01	C:1-61,C:343-477
1k	1qh1B01	B:68-211
1l	1qh1D01	D:68-211

Class: Mainly Alpha (13335)

Architecture: Up-down Bundle (3216)

Topology: Nitrogenase Molybdenum-iron Protein, subunit B; domain 4 (19)

Homologous Superfamily: Nitrogenase Molybdenum-iron Protein, subunit B, domain 4 (19)

Klebsiella pneumoniae. Organism_taxid: 573. Strain: m5a1. Variant: wild-type. (3)

2a	1qh1B04	B:317-360,B:481-519
2b	1qh1D04	D:317-360,D:481-519

(no "Pfam Domain" information available for 1QH1)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,C (NIFD_KLEPN | P00466)

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_KLEPN | P09772)

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.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Gly A:446 - Pro A:447	[ RasMol ]
		Gly C:446 - Pro C:447	[ RasMol ]
		Phe B:467 - Pro B:468	[ RasMol ]
		Phe D:467 - Pro D:468	[ RasMol ]
		Trp A:251 - Ser A:252	[ RasMol ]
		Trp C:251 - Ser C:252	[ RasMol ]
		Tyr B:11 - Pro B:12	[ RasMol ]
		Tyr D:11 - Pro D:12	[ RasMol ]

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	1qh1
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	NIFD_KLEPN \| P00466
		Comparative Protein Structure Models	:	ModBase
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	NIFK_KLEPN \| P09772
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	1.18.6.1
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	NIFD_KLEPN \| P00466
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	NIFK_KLEPN \| P09772
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

UniProtKB/Swiss-Prot
	NIFD_KLEPN \| P00466	:	1h1l 1qgu 1qh8
	NIFK_KLEPN \| P09772	:	1h1l 1qgu 1qh8

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (6, 28)

Sites (28, 28)

SS Bonds (0, 0)

Cis Peptide Bonds (8, 8)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 8)

Exons (0, 0)

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SCOP Domains (2, 4)

CATH Domains (2, 14)

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Gene Ontology (10, 20)

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Entries Sharing at Least One Protein Chain (UniProt ID)

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