ID A0A0L6ZE05_9CLOT Unreviewed; 456 AA.
AC A0A0L6ZE05;
DT 11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT 11-NOV-2015, sequence version 1.
DT 27-MAR-2024, entry version 28.
DE RecName: Full=Nitrogenase molybdenum-iron protein beta chain {ECO:0000256|ARBA:ARBA00014775, ECO:0000256|RuleBase:RU364127};
DE EC=1.18.6.1 {ECO:0000256|ARBA:ARBA00012773, ECO:0000256|RuleBase:RU364127};
DE AltName: Full=Dinitrogenase {ECO:0000256|RuleBase:RU364127};
GN Name=nifK {ECO:0000313|EMBL:KOA21201.1};
GN ORFNames=CLHOM_03310 {ECO:0000313|EMBL:KOA21201.1};
OS Clostridium homopropionicum DSM 5847.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=1121318 {ECO:0000313|EMBL:KOA21201.1, ECO:0000313|Proteomes:UP000037043};
RN [1] {ECO:0000313|Proteomes:UP000037043}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 5847 {ECO:0000313|Proteomes:UP000037043};
RA Poehlein A., Beck M., Schiel-Bengelsdorf B., Bengelsdorf F.R., Daniel R.,
RA Duerre P.;
RT "Genome sequence of the strict anaerobe Clostridium homopropionicum LuHBu1
RT (DSM 5847T).";
RL Submitted (AUG-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: This molybdenum-iron protein is part of the nitrogenase
CC complex that catalyzes the key enzymatic reactions in nitrogen
CC fixation. {ECO:0000256|ARBA:ARBA00002621,
CC ECO:0000256|RuleBase:RU364127}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=16 ATP + 16 H2O + N2 + 8 reduced [2Fe-2S]-[ferredoxin] = 16
CC ADP + 6 H(+) + H2 + 2 NH4(+) + 8 oxidized [2Fe-2S]-[ferredoxin] + 16
CC phosphate; Xref=Rhea:RHEA:21448, Rhea:RHEA-COMP:10000, Rhea:RHEA-
CC COMP:10001, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17997,
CC ChEBI:CHEBI:18276, ChEBI:CHEBI:28938, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:33737, ChEBI:CHEBI:33738, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:456216; EC=1.18.6.1;
CC Evidence={ECO:0000256|ARBA:ARBA00000805,
CC ECO:0000256|RuleBase:RU364127};
CC -!- COFACTOR:
CC Name=[8Fe-7S] cluster; Xref=ChEBI:CHEBI:21143;
CC Evidence={ECO:0000256|RuleBase:RU364127};
CC Note=Binds 1 [8Fe-7S] cluster per heterodimer.
CC {ECO:0000256|RuleBase:RU364127};
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains. Forms complex with
CC the iron protein (nitrogenase component 2).
CC {ECO:0000256|ARBA:ARBA00011462, ECO:0000256|RuleBase:RU364127}.
CC -!- SIMILARITY: Belongs to the NifD/NifK/NifE/NifN family.
CC {ECO:0000256|ARBA:ARBA00011002, ECO:0000256|RuleBase:RU004021}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KOA21201.1}.
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DR EMBL; LHUR01000010; KOA21201.1; -; Genomic_DNA.
DR RefSeq; WP_052219935.1; NZ_LHUR01000010.1.
DR AlphaFoldDB; A0A0L6ZE05; -.
DR STRING; 36844.SAMN04488501_10773; -.
DR PATRIC; fig|1121318.3.peg.334; -.
DR Proteomes; UP000037043; Unassembled WGS sequence.
DR GO; GO:0016612; C:molybdenum-iron nitrogenase complex; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0018697; F:carbonyl sulfide nitrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0051536; F:iron-sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016163; F:nitrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-KW.
DR CDD; cd01974; Nitrogenase_MoFe_beta; 1.
DR Gene3D; 3.40.50.1980; Nitrogenase molybdenum iron protein domain; 3.
DR Gene3D; 1.20.89.10; Nitrogenase Molybdenum-iron Protein, subunit B, domain 4; 1.
DR InterPro; IPR000510; Nase/OxRdtase_comp1.
DR InterPro; IPR000318; Nase_comp1_CS.
DR InterPro; IPR005976; Nase_Mo-Fe_CF_bsu.
DR NCBIfam; TIGR01286; nifK; 1.
DR PANTHER; PTHR33712; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT B; 1.
DR PANTHER; PTHR33712:SF7; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT B; 1.
DR Pfam; PF00148; Oxidored_nitro; 1.
DR SUPFAM; SSF53807; Helical backbone' metal receptor; 1.
DR PROSITE; PS00699; NITROGENASE_1_1; 1.
DR PROSITE; PS00090; NITROGENASE_1_2; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|RuleBase:RU364127};
KW Iron {ECO:0000256|RuleBase:RU364127};
KW Iron-sulfur {ECO:0000256|RuleBase:RU364127};
KW Metal-binding {ECO:0000256|RuleBase:RU364127};
KW Nitrogen fixation {ECO:0000256|ARBA:ARBA00023231,
KW ECO:0000256|RuleBase:RU004021};
KW Nucleotide-binding {ECO:0000256|RuleBase:RU364127};
KW Oxidoreductase {ECO:0000256|RuleBase:RU364127,
KW ECO:0000313|EMBL:KOA21201.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000037043}.
FT DOMAIN 23..439
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 456 AA; 50330 MW; B1822A133260562A CRC64;
MLDKTPKELY ERKALRINPA KTCQPIGAMY AALGIHKCLP HSHGSQGCCS YHRMQLTRHF
KDPIMASTSS FTEGSSVFGG GSNLKTAIKN VFSIYEPDMI AVHTTCLSET IGDDLRTIIS
QAESEVPEGK YVIHANTPSY VGSHITGFSN MIKGAVTYLS QNTGEANGKI NVLPGFISPG
DMREIKRILN VMDIPFIMLP DTSEVVDTPM TGTFEMYPKG GTKIKDIIDA GNSNYTLALG
KFSSEAGAVA LEKKCKVPME VMNIPLGIEA VDKFITELSK ITGKEVPYEI EEERGQLVDL
MLDSHSYFFG KKVAVFGDPD TVISLTEFII SLGMIPKYVV TGTPGDSFDK EIGEMLEKAG
IKDSIVKNAG DLFELHQWIK NEPVDLLIGN TYGKYIAKAE DIPFVRFGFP ILDRFAHHYF
PTTGYKGAIR LVEMIANAIM DRIDRDAEDE DFELVM
//
