ID A0A117SDQ8_9FIRM Unreviewed; 534 AA.
AC A0A117SDQ8;
DT 13-APR-2016, integrated into UniProtKB/TrEMBL.
DT 13-APR-2016, sequence version 1.
DT 27-MAR-2024, entry version 19.
DE RecName: Full=Nitrogenase protein alpha chain {ECO:0000256|RuleBase:RU004022};
DE EC=1.18.6.1 {ECO:0000256|RuleBase:RU004022};
GN ORFNames=APF84_00690 {ECO:0000313|EMBL:KUO65806.1};
OS Gracilibacter sp. BRH_c7a.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Gracilibacteraceae;
OC Gracilibacter.
OX NCBI_TaxID=1734398 {ECO:0000313|EMBL:KUO65806.1, ECO:0000313|Proteomes:UP000053404};
RN [1] {ECO:0000313|EMBL:KUO65806.1, ECO:0000313|Proteomes:UP000053404}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BRH_c7a {ECO:0000313|EMBL:KUO65806.1};
RA Bagnoud A., Chourey K., Hettich R.L., De Bruijn I., Andersson A.F.,
RA Leupin O.X., Schwyn B., Bernier-Latmani R.;
RT "Microbial metabolic network in the subsurface.";
RL Submitted (OCT-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 -!- 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|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:KUO65806.1}.
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DR EMBL; LOEZ01000019; KUO65806.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A117SDQ8; -.
DR STRING; 1734398.APF84_00690; -.
DR Proteomes; UP000053404; 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 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}.
FT DOMAIN 54..508
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 534 AA; 59599 MW; 1A37F1F513CCC239 CRC64;
MAINSKKLDE ILDLYPSKVK RNRKNHIVVR DTTTVQEIEA NTRTVPGIIT NRGCAFAGCK
GVVLGPLKDM IHIVHGPIGC GYYAWATRRN KAQSDDPKNN YISYCFSTDM QESDIVFGGE
KKLAKVIDEV VEIFHPKAIT ISATCPVGLI GDDLNAVAKA AEAKHLIKIL SFNCEGYKGV
SQSAGHHIAN NGLVEHVIGS GDMEEASGKY PINLLGEYNI GGDGWEIARV LKDIGYDIIS
VMTGDGSYEE LKNAHVSDLN LVQCHRSINY IAEMLETKYG TPWLKVNFIG VQSTIESLRN
MALYFGDQDL INKTEEVIAR EIAVVESVID QYRMICQGKT AFCFVGGSRG HHYQGLFAEL
GIETILAGYE FAHRDDYEGR DVLPHIKTDA DSKNIPDLKV TQDEQRFRLK LSPERAEELK
EKIPLSQYKG LIQDMKDGTI MVDDLNHFET EEFIKILKPD IFASGVKDKY VIQKMGIPSK
QLHSYDYSGP YAGFRGAMKF AEDVANSFIS PTWNFITPPW KNEPLLEGKI EEGK
//
