ID A0A3P3VJK0_9GAMM Unreviewed; 523 AA.
AC A0A3P3VJK0;
DT 13-FEB-2019, integrated into UniProtKB/TrEMBL.
DT 13-FEB-2019, sequence version 1.
DT 24-JAN-2024, entry version 18.
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:RRJ82931.1};
GN ORFNames=D0544_13865 {ECO:0000313|EMBL:RRJ82931.1};
OS Aestuariirhabdus litorea.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC Aestuariirhabdaceae; Aestuariirhabdus.
OX NCBI_TaxID=2528527 {ECO:0000313|EMBL:RRJ82931.1, ECO:0000313|Proteomes:UP000280792};
RN [1] {ECO:0000313|EMBL:RRJ82931.1, ECO:0000313|Proteomes:UP000280792}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GTF-13 {ECO:0000313|EMBL:RRJ82931.1,
RC ECO:0000313|Proteomes:UP000280792};
RA Khan S.A.;
RL Submitted (AUG-2018) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:RRJ82931.1, ECO:0000313|Proteomes:UP000280792}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GTF-13 {ECO:0000313|EMBL:RRJ82931.1,
RC ECO:0000313|Proteomes:UP000280792};
RA Shieh W.Y.;
RT "Simiduia agarivorans gen. nov., sp. nov., a marine, agarolytic bacterium
RT isolated from shallow coastal water from Keelung, Taiwan.";
RL Submitted (DEC-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:RRJ82931.1}.
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DR EMBL; QWEZ01000002; RRJ82931.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3P3VJK0; -.
DR Proteomes; UP000280792; 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 InterPro; IPR024564; Nase_Mo-Fe_CF_bsu_N.
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; PF11844; DUF3364; 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:RRJ82931.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000280792}.
FT DOMAIN 1..56
FT /note="Nitrogenase molybdenum-iron protein beta chain N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF11844"
FT DOMAIN 70..501
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 523 AA; 58249 MW; 2C8A400B597ED7AA CRC64;
MSQTADNVKP CYPLFQQPEY QELLARKKAS MEDPAADAKV KEIFDWTTSE EYQEINFARK
ALTIDPAKAC QPLGAVLCAL GFEKTLPYVH GSQGCVAYFR TYFNRHFKEP VMTVSDSMTE
DSAVFGGQQN MKDGLENANA LYKPEIIAVS TTCMAEVIGD DLNAFIGNAK KEGHIPVDMP
TPFAHTPSFV GSHTNGWDGM FEGFARTFTL NDMEGKEVGS SGKLNLVPGF ETYLGNYRVL
KRMMADMGVE ASLLSDPSEV LDTPADGKYR MYEGGTTQAE IKEAPNAIDS LLLQPWALTK
TKKFVQTTWK QPATAIDYPM GLAATDRFLM TVSELTGKEI PESLALERGR LVDMMQDSHT
WLHGKKFAIY GDPDFVMGLA RFLLELGAEP SIILCQNGNK RFAKALQSVL DASPFGAQCE
IHIGKDLWHL RSLLFTNKPD FVIGNSYGKF LQRDTLAKGK EFEVPLIRLG FPIFDRHHLH
RQTTLGYEGA MQVLTTLVNS VLEKLDAETM EIGVTDYNFD LVR
//
