NIFD_HERSE
ID NIFD_HERSE Reviewed; 484 AA.
AC P77874;
DT 15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1997, sequence version 1.
DT 03-AUG-2022, entry version 84.
DE RecName: Full=Nitrogenase molybdenum-iron protein alpha chain;
DE EC=1.18.6.1;
DE AltName: Full=Dinitrogenase;
DE AltName: Full=Nitrogenase component I;
GN Name=nifD;
OS Herbaspirillum seropedicae.
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Oxalobacteraceae; Herbaspirillum.
OX NCBI_TaxID=964;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=Z78 / ATCC 35893 / DSM 6446 / LMG 6514;
RX PubMed=9222418;
RA Machado I.M.P., Yates M.G., Machado H.B., Souza E.M., Pedrosa F.O.;
RT "Cloning and sequencing of the nitrogenase structural genes nifHDK of
RT Herbaspirillum seropedicae.";
RL Braz. J. Med. Biol. Res. 29:1599-1602(1996).
CC -!- FUNCTION: This molybdenum-iron protein is part of the nitrogenase
CC complex that catalyzes the key enzymatic reactions in nitrogen
CC fixation.
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 -!- COFACTOR:
CC Name=[8Fe-7S] cluster; Xref=ChEBI:CHEBI:21143; Evidence={ECO:0000250};
CC Note=Binds 1 [8Fe-7S] cluster per heterodimer. {ECO:0000250};
CC -!- COFACTOR:
CC Name=[7Fe-Mo-9S-C-homocitryl] cluster; Xref=ChEBI:CHEBI:30409;
CC Evidence={ECO:0000250};
CC Note=Binds 1 [7Fe-Mo-9S-C-homocitryl] cluster per subunit.
CC {ECO:0000250};
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains. Forms complex with
CC the iron protein (nitrogenase component 2).
CC -!- SIMILARITY: Belongs to the NifD/NifK/NifE/NifN family. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; Z54207; CAA90933.1; -; Genomic_DNA.
DR AlphaFoldDB; P77874; -.
DR SMR; P77874; -.
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 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 PANTHER; PTHR43457; PTHR43457; 1.
DR Pfam; PF00148; Oxidored_nitro; 1.
DR TIGRFAMs; TIGR01862; N2-ase-Ialpha; 1.
DR TIGRFAMs; TIGR01282; nifD; 1.
DR PROSITE; PS00699; NITROGENASE_1_1; 1.
DR PROSITE; PS00090; NITROGENASE_1_2; 1.
PE 3: Inferred from homology;
KW ATP-binding; Iron; Iron-sulfur; Metal-binding; Molybdenum;
KW Nitrogen fixation; Nucleotide-binding; Oxidoreductase.
FT CHAIN 1..484
FT /note="Nitrogenase molybdenum-iron protein alpha chain"
FT /id="PRO_0000153068"
FT BINDING 63
FT /ligand="[8Fe-7S] cluster"
FT /ligand_id="ChEBI:CHEBI:21143"
FT /ligand_note="ligand shared with beta chain"
FT /evidence="ECO:0000250"
FT BINDING 89
FT /ligand="[8Fe-7S] cluster"
FT /ligand_id="ChEBI:CHEBI:21143"
FT /ligand_note="ligand shared with beta chain"
FT /evidence="ECO:0000250"
FT BINDING 155
FT /ligand="[8Fe-7S] cluster"
FT /ligand_id="ChEBI:CHEBI:21143"
FT /ligand_note="ligand shared with beta chain"
FT /evidence="ECO:0000250"
FT BINDING 278
FT /ligand="[7Fe-Mo-9S-C-homocitryl] cluster"
FT /ligand_id="ChEBI:CHEBI:30409"
FT /evidence="ECO:0000250"
FT BINDING 445
FT /ligand="[7Fe-Mo-9S-C-homocitryl] cluster"
FT /ligand_id="ChEBI:CHEBI:30409"
FT /evidence="ECO:0000250"
SQ SEQUENCE 484 AA; 54553 MW; 8D8AE26476E6D1B2 CRC64;
MSLTVEETTA RNTELINEVL KAYPDKTAKR RAKHLTTQEE GKSDCNVKSN IKSIPGVMTI
PPCAYAGSKG VVWGPIKDMI HISHGPVGCG QYSWGSRRNY YIGKTGIDSF VTMQFTSDFQ
EKDIVFGGDK KLEKIVDEIQ ELFPLNKGIS VQSECPIGLI GDDIEAVSKK KSKQYEGHTI
VPVRCEGFRG VSQSLGHHVA NDAIKEWVLD KMDPDKNQFV ATPYDVAIIG DYNIGGDAWS
SRILLEEIGL RVIAQWSGDG TLAEMENTPK AKLNVLHCYR SMNYISRHME EKFGIPWVEY
NFFGPSQIEA SLRQIASHFD DKIKEGAERV IAKYKALTDA VIAKYRPRLE GKTVMLFVGG
LRPRHVIDAY GDLGMKVVGT GYEFGHNDDY QRTTHYVEDG TLIYDDVTSY EFEKFVEKIE
PDLVGSGIKE KYVFQKMGVP FRQMHSWDYS GPYHGYDRFA IFARDMDMAI NSPVWGMAKA
PWKA