ID A0A371AU98_9FIRM Unreviewed; 454 AA.
AC A0A371AU98;
DT 07-NOV-2018, integrated into UniProtKB/TrEMBL.
DT 07-NOV-2018, sequence version 1.
DT 27-MAR-2024, entry version 19.
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:RDU23143.1};
GN ORFNames=DWV06_12355 {ECO:0000313|EMBL:RDU23143.1};
OS Anaerosacchariphilus polymeriproducens.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae;
OC Anaerosacchariphilus.
OX NCBI_TaxID=1812858 {ECO:0000313|EMBL:RDU23143.1, ECO:0000313|Proteomes:UP000255036};
RN [1] {ECO:0000313|EMBL:RDU23143.1, ECO:0000313|Proteomes:UP000255036}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MCWD5 {ECO:0000313|EMBL:RDU23143.1,
RC ECO:0000313|Proteomes:UP000255036};
RA Kim W., Yang S.-H., Oh J., Lee J.-H., Kwon K.K.;
RT "Anaerosacharophilus polymeroproducens gen. nov. sp. nov., an anaerobic
RT bacterium isolated from salt field.";
RL Submitted (JUL-2018) 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:RDU23143.1}.
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DR EMBL; QRCT01000034; RDU23143.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A371AU98; -.
DR OrthoDB; 9800746at2; -.
DR Proteomes; UP000255036; 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 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:RDU23143.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000255036}.
FT DOMAIN 23..437
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 454 AA; 50298 MW; 58EC4A0DF59B2824 CRC64;
MLNYTNKKVY ERTALRINPV KTCQPVGAMY AALGVHRCLP HSHGSQGCCA FHRMFLTRHF
KEPAMASSSS FTEGASVFGG GSNLKTAAKN IFDLYDPDII AVHTTCLSET IGDDLNALIT
EMKIPEGKYI VHCNTPSYKG SHIDGYTNMV SGFINNLAEK GDETNGKICV FPGFVNPGDV
REYKRLLNIM KIPFTMLPDT SGVMDSPMTG KFEMYPKGGT TIKEIKDIGN CTMSLALGLK
ASEPSAQVLE KKLKIPYKSL DLPMGVEATD KFIMTLQEIT KEEIPYSIEE ERGQLVDIMI
DIHPYTYGKK AAIFGDPDTV LGITAFVLEL GMIPKYVVTG TPGTDFVERA NLLFKKFGVD
GCIAKESGDL FLMHQWIKNE PVDLLIGGSY GKHIARAEDI PLVRMGFPII DRYIHSYVPL
VGYKGAMRMA EFITNALMDY QDSHCKEEDL EVVM
//
