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NIFH_SYNFM
ID   NIFH_SYNFM              Reviewed;         274 AA.
AC   A0LH11;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   12-DEC-2006, sequence version 1.
DT   03-AUG-2022, entry version 94.
DE   RecName: Full=Nitrogenase iron protein {ECO:0000255|HAMAP-Rule:MF_00533};
DE            EC=1.18.6.1 {ECO:0000255|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase Fe protein {ECO:0000255|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase component II {ECO:0000255|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase reductase {ECO:0000255|HAMAP-Rule:MF_00533};
GN   Name=nifH {ECO:0000255|HAMAP-Rule:MF_00533}; OrderedLocusNames=Sfum_1019;
OS   Syntrophobacter fumaroxidans (strain DSM 10017 / MPOB).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Syntrophobacterales;
OC   Syntrophobacteraceae; Syntrophobacter.
OX   NCBI_TaxID=335543;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 10017 / MPOB;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Pitluck S., Goltsman E.G.,
RA   Martinez M., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Kim E., Boone D.R., Brockman F., Culley D., Ferry J., Gunsalus R.,
RA   McInerney M.J., Morrison M., Plugge C., Rohlin L., Scholten J., Sieber J.,
RA   Stams A.J.M., Worm P., Henstra A.M., Richardson P.;
RT   "Complete sequence of Syntrophobacter fumaroxidans MPOB.";
RL   Submitted (OCT-2006) to the EMBL/GenBank/DDBJ databases.
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:0000255|HAMAP-
CC       Rule:MF_00533}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00533};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00533};
CC       Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000255|HAMAP-
CC       Rule:MF_00533};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00533}.
CC   -!- PTM: The reversible ADP-ribosylation of Arg-97 inactivates the
CC       nitrogenase reductase and regulates nitrogenase activity.
CC       {ECO:0000255|HAMAP-Rule:MF_00533}.
CC   -!- SIMILARITY: Belongs to the NifH/BchL/ChlL family. {ECO:0000255|HAMAP-
CC       Rule:MF_00533}.
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DR   EMBL; CP000478; ABK16713.1; -; Genomic_DNA.
DR   RefSeq; WP_011697884.1; NC_008554.1.
DR   AlphaFoldDB; A0LH11; -.
DR   SMR; A0LH11; -.
DR   STRING; 335543.Sfum_1019; -.
DR   EnsemblBacteria; ABK16713; ABK16713; Sfum_1019.
DR   KEGG; sfu:Sfum_1019; -.
DR   eggNOG; COG1348; Bacteria.
DR   HOGENOM; CLU_059373_0_0_7; -.
DR   OMA; YVCDYYL; -.
DR   OrthoDB; 729012at2; -.
DR   Proteomes; UP000001784; Chromosome.
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; Reference proteome.
FT   CHAIN           1..274
FT                   /note="Nitrogenase iron protein"
FT                   /id="PRO_1000211889"
FT   BINDING         8..15
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00533"
FT   BINDING         94
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00533"
FT   BINDING         131
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00533"
FT   MOD_RES         97
FT                   /note="ADP-ribosylarginine; by dinitrogenase reductase ADP-
FT                   ribosyltransferase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00533"
SQ   SEQUENCE   274 AA;  29776 MW;  1570D716B2E20804 CRC64;
     MRKIAIYGKG GIGKSTTTQN TVAGLAEMGR KVMVVGCDPK ADSTRLLLGG LSQKTVLDTL
     RTEGEDVELD DIRKVGFSKS ICVESGGPEP GVGCAGRGII TSINLLEQLG AYASTQALDY
     VFYDVLGDVV CGGFAMPIRE GKAREIYIVV SGEMMAMYAA NNICKGIVKF AEAGGVRLGG
     LICNSRKVDN EKEMIEAFAR QLGTQMIHFV PRDNMVQRAE INRKTVIEFD PAHSQADEYR
     SLARKIEDND MHVIPKPMHT DHLEKLLIEH GLAA
 
 
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