NIFH_HERSE
ID NIFH_HERSE Reviewed; 292 AA.
AC P77873;
DT 23-JAN-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1997, sequence version 1.
DT 03-AUG-2022, entry version 112.
DE RecName: Full=Nitrogenase iron protein;
DE EC=1.18.6.1;
DE AltName: Full=Nitrogenase Fe protein;
DE AltName: Full=Nitrogenase component II;
DE AltName: Full=Nitrogenase reductase;
GN Name=nifH;
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).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 18-129.
RC STRAIN=Z67 / LMG 6513;
RX PubMed=9209030; DOI=10.1128/jb.179.13.4172-4178.1997;
RA Hurek T., Egener T., Reinhold-Hurek B.;
RT "Divergence in nitrogenases of Azoarcus spp., Proteobacteria of the beta
RT subclass.";
RL J. Bacteriol. 179:4172-4178(1997).
CC -!- FUNCTION: The key enzymatic reactions in nitrogen fixation are
CC catalyzed by the nitrogenase complex, which has 2 components: the iron
CC protein and the molybdenum-iron protein. {ECO:0000250}.
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=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000250};
CC Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000250};
CC -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC -!- PTM: The reversible ADP-ribosylation of Arg-102 inactivates the
CC nitrogenase reductase and regulates nitrogenase activity.
CC {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the NifH/BchL/ChlL family. {ECO:0000305}.
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DR EMBL; Z54207; CAA90932.1; -; Genomic_DNA.
DR EMBL; U97121; AAB63038.1; -; Genomic_DNA.
DR RefSeq; WP_013234820.1; NZ_JWZZ01000017.1.
DR AlphaFoldDB; P77873; -.
DR SMR; P77873; -.
DR KEGG; hsz:ACP92_14285; -.
DR PATRIC; fig|964.11.peg.2993; -.
DR OMA; YVCDYYL; -.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0018697; F:carbonyl sulfide nitrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016163; F:nitrogenase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.300; -; 1.
DR HAMAP; MF_00533; NifH; 1.
DR InterPro; IPR030655; NifH/chlL_CS.
DR InterPro; IPR000392; NifH/frxC.
DR InterPro; IPR005977; Nitrogenase_Fe_NifH.
DR InterPro; IPR027417; P-loop_NTPase.
DR PANTHER; PTHR42864; PTHR42864; 1.
DR Pfam; PF00142; Fer4_NifH; 1.
DR PIRSF; PIRSF000363; Nitrogenase_iron; 1.
DR SUPFAM; SSF52540; SSF52540; 1.
DR TIGRFAMs; TIGR01287; nifH; 1.
DR PROSITE; PS00746; NIFH_FRXC_1; 1.
DR PROSITE; PS00692; NIFH_FRXC_2; 1.
DR PROSITE; PS51026; NIFH_FRXC_3; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; ADP-ribosylation; ATP-binding; Iron; Iron-sulfur; Metal-binding;
KW Nitrogen fixation; Nucleotide-binding; Oxidoreductase.
FT CHAIN 1..292
FT /note="Nitrogenase iron protein"
FT /id="PRO_0000139510"
FT BINDING 11..18
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255"
FT BINDING 99
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000250"
FT BINDING 133
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000250"
FT MOD_RES 102
FT /note="ADP-ribosylarginine; by dinitrogenase reductase ADP-
FT ribosyltransferase"
FT /evidence="ECO:0000250"
SQ SEQUENCE 292 AA; 31360 MW; F34492139646A567 CRC64;
MASLRQIAFY GKGGIGKSTT SQNTLAALAQ MGQRILIVGC DPKADSTRLI LHAKAQDTIL
SLAADAGSVE DLELEDVMKI GYQNIRCVES GGPEPGVGCA GRGVITSINF LEEEGAYDDT
DYVSYDVLGD VVCGGFAMPI RENKAQEIYI VMSGEMMAMY AANNISKGIL KYANSGGVRL
GGLICNERKT DKELELATAL AAKLNSKLIH FVPRDNIVQH AELRRMTVLE YAPDSKQAGE
YRTLANKIHE NAGNGTIPTP ITMDELEDLL MQHGLMPVVD ESMVGKSAEV AA
