ID A0A272EY47_9RHOO Unreviewed; 492 AA.
AC A0A272EY47;
DT 20-DEC-2017, integrated into UniProtKB/TrEMBL.
DT 20-DEC-2017, sequence version 1.
DT 27-MAR-2024, entry version 15.
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:PAS95031.1};
GN ORFNames=CGU29_00865 {ECO:0000313|EMBL:PAS95031.1};
OS Candidatus Dactylopiibacterium carminicum.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Rhodocyclales;
OC Rhodocyclaceae; Dactylopiibacterium.
OX NCBI_TaxID=857335 {ECO:0000313|EMBL:PAS95031.1, ECO:0000313|Proteomes:UP000216107};
RN [1] {ECO:0000313|EMBL:PAS95031.1, ECO:0000313|Proteomes:UP000216107}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NFDCM {ECO:0000313|EMBL:PAS95031.1,
RC ECO:0000313|Proteomes:UP000216107};
RA Vera A.;
RT "Candidatus Dactylopiibacterium carminicum, a nitrogen-fixing symbiont of
RT the cochineal insect Dactylopius coccus and Dactylopius opuntiae
RT (Hemiptera: Coccoidea: Dactylopiidae).";
RL Submitted (JUL-2017) 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}.
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:PAS95031.1}.
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DR EMBL; NMRN01000002; PAS95031.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A272EY47; -.
DR OrthoDB; 9762718at2; -.
DR Proteomes; UP000216107; 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; 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}.
FT DOMAIN 63..467
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
SQ SEQUENCE 492 AA; 55330 MW; FBB1497046E7DDA0 CRC64;
MSEELTRERA QALIEEVLEV YPEKAKKDRA KHLMVNDKAI TQSKKCITSN RKSLPGVMTQ
RGCAYAGSKG VVWGPIKDII DISHGPVGCG AYSRGGRRNY FAGTSGVDSF CDINFTSDFQ
EKDVVFGGDK KLAKLIDELE MLFPLSKGIS VQSECPVGLI GDDIEAVSKK KAAEIGKTIV
PVRCEGFRGV SQSLGHHIAN DAVRDWILSA RDEQPFEGTP YDVCILGDYN IGGDAWASRI
LLEEMGLRVV AQWSGDGTLT EMENTPKVKL NLLHCYRSMN YIARHMEEKY NIPWMEYNFF
GPTKIKESLR EIASHFDEKI QEGAERVIAK YTPIMDAVIA KYRPRLEGKK VMLYVGGLRP
RHTVGAYEDL GMEVVGAGYE FAHNDDYDRT MKDMKDATLI YDDVTGYEFE EFVRQLKPDL
IGSGIKEKYA FHKMAVPFRQ LHSWDYSGPY HGFDGFAIFA RDMDMTVNNP CWSLFKAPWQ
KPAAAEPEQK AA
//
