ID A0A2S2CS13_9PROT Unreviewed; 483 AA.
AC A0A2S2CS13;
DT 18-JUL-2018, integrated into UniProtKB/TrEMBL.
DT 18-JUL-2018, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=Nitrogenase protein alpha chain {ECO:0000256|RuleBase:RU004022};
DE EC=1.18.6.1 {ECO:0000256|RuleBase:RU004022};
GN Name=nifD {ECO:0000313|EMBL:AWK87313.1};
GN ORFNames=DEW08_14775 {ECO:0000313|EMBL:AWK87313.1};
OS Azospirillum thermophilum.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Azospirillaceae; Azospirillum.
OX NCBI_TaxID=2202148 {ECO:0000313|EMBL:AWK87313.1, ECO:0000313|Proteomes:UP000245629};
RN [1] {ECO:0000313|Proteomes:UP000245629}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CFH 70021 {ECO:0000313|Proteomes:UP000245629};
RA Zhao Z.;
RT "Azospirillum thermophila sp. nov., a novel isolated from hot spring.";
RL Submitted (MAY-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 -!- 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:RU004022};
CC -!- COFACTOR:
CC Name=[7Fe-Mo-9S-C-homocitryl] cluster; Xref=ChEBI:CHEBI:30409;
CC Evidence={ECO:0000256|ARBA:ARBA00001969};
CC -!- COFACTOR:
CC Name=[8Fe-7S] cluster; Xref=ChEBI:CHEBI:21143;
CC Evidence={ECO:0000256|ARBA:ARBA00001919};
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}.
CC -!- SIMILARITY: Belongs to the NifD/NifK/NifE/NifN family.
CC {ECO:0000256|ARBA:ARBA00011002, ECO:0000256|RuleBase:RU004021}.
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DR EMBL; CP029353; AWK87313.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2S2CS13; -.
DR KEGG; azz:DEW08_14775; -.
DR OrthoDB; 9762718at2; -.
DR Proteomes; UP000245629; Chromosome 2.
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; cd01976; Nitrogenase_MoFe_alpha; 1.
DR Gene3D; 3.40.50.1980; Nitrogenase molybdenum iron protein domain; 3.
DR InterPro; IPR000510; Nase/OxRdtase_comp1.
DR InterPro; IPR010143; Nase_comp1_asu.
DR InterPro; IPR000318; Nase_comp1_CS.
DR InterPro; IPR005972; Nase_Mo-Fe_asu.
DR NCBIfam; TIGR01862; N2-ase-Ialpha; 1.
DR NCBIfam; TIGR01282; nifD; 1.
DR PANTHER; PTHR43457; NITROGENASE MOLYBDENUM-IRON PROTEIN ALPHA CHAIN; 1.
DR PANTHER; PTHR43457:SF1; NITROGENASE MOLYBDENUM-IRON PROTEIN ALPHA CHAIN; 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|ARBA:ARBA00022840};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|RuleBase:RU004022};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|RuleBase:RU004022}; Molybdenum {ECO:0000256|ARBA:ARBA00022505};
KW Nitrogen fixation {ECO:0000256|ARBA:ARBA00023231,
KW ECO:0000256|RuleBase:RU004021};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU004022};
KW Reference proteome {ECO:0000313|Proteomes:UP000245629}.
FT DOMAIN 66..471
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 483 AA; 54332 MW; 5FEC9F950A72280B CRC64;
MSLSENTQTT TAVDVKSLVN EVLEAYPEKS RKRRAKHLNV LEAEAKDCGV KSNVKSIPGV
MTIRGCAYAG SKGVVWGPIK DMIHISHGPV GCGYYSWSGR RNYYIGDTGV DSWGTMHFTS
DFQEKDIVFG GDKKLHKVIE EINELFPLVN GISIQSECPI GLIGDDIEAV ARAKSAEIGK
PIIPVRCEGF RGVSQSLGHH IANDTIRDWV FEKTEPKPDF VSTPYDVTII GDYNIGGDAW
SSRILLEEIG LRVIAQWSGD GTMAELENTP KAKVNLIHCY RSMNYIARHM EEKFGIPWVE
YNFFGPSQIA DSLRKIAALF DDKIKENAEK VIARYQPMVD AVIAKYKPRL EGKKVMIYVG
GLRPRHVVDA YHDLGMEIVG TGYEFAHNDD YQRTPHYVKE GTLIYDDVTA FELEKFVEAM
RPDLVASGIK EKYVFQKMGL PFRQMHSWDY SGPYHGYDGF AIFARDMDMA INNPVWGVMK
APF
//
