ID A7HET1_ANADF Unreviewed; 288 AA.
AC A7HET1;
DT 11-SEP-2007, integrated into UniProtKB/TrEMBL.
DT 11-SEP-2007, sequence version 1.
DT 27-MAR-2024, entry version 107.
DE RecName: Full=Nitrogenase iron protein {ECO:0000256|HAMAP-Rule:MF_00533};
DE EC=1.18.6.1 {ECO:0000256|HAMAP-Rule:MF_00533};
DE AltName: Full=Nitrogenase Fe protein {ECO:0000256|HAMAP-Rule:MF_00533};
DE AltName: Full=Nitrogenase component II {ECO:0000256|HAMAP-Rule:MF_00533};
DE AltName: Full=Nitrogenase reductase {ECO:0000256|HAMAP-Rule:MF_00533};
GN Name=nifH {ECO:0000256|HAMAP-Rule:MF_00533};
GN OrderedLocusNames=Anae109_3030 {ECO:0000313|EMBL:ABS27227.1};
OS Anaeromyxobacter sp. (strain Fw109-5).
OC Bacteria; Myxococcota; Myxococcia; Myxococcales; Cystobacterineae;
OC Anaeromyxobacteraceae; Anaeromyxobacter.
OX NCBI_TaxID=404589 {ECO:0000313|EMBL:ABS27227.1, ECO:0000313|Proteomes:UP000006382};
RN [1] {ECO:0000313|EMBL:ABS27227.1, ECO:0000313|Proteomes:UP000006382}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Fw109-5 {ECO:0000313|EMBL:ABS27227.1,
RC ECO:0000313|Proteomes:UP000006382};
RX PubMed=25614562; DOI=10.1128/genomeA.01449-14;
RA Hwang C., Copeland A., Lucas S., Lapidus A., Barry K., Glavina Del Rio T.,
RA Dalin E., Tice H., Pitluck S., Sims D., Brettin T., Bruce D.C.,
RA Detter J.C., Han C.S., Schmutz J., Larimer F.W., Land M.L., Hauser L.J.,
RA Kyrpides N., Lykidis A., Richardson P., Belieav A., Sanford R.A.,
RA Loeffler F.E., Fields M.W.;
RT "Complete genome sequence of Anaeromyxobacter sp. Fw109-5, an anaerobic,
RT metal-reducing bacterium isolated from a contaminated subsurface
RT environment.";
RL Genome Announc. 3:0-0(2015).
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:0000256|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;
CC Evidence={ECO:0000256|ARBA:ARBA00000805, ECO:0000256|HAMAP-
CC Rule:MF_00533};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00533};
CC Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000256|HAMAP-
CC Rule:MF_00533};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|ARBA:ARBA00011738, ECO:0000256|HAMAP-
CC Rule:MF_00533}.
CC -!- PTM: The reversible ADP-ribosylation of Arg inactivates the nitrogenase
CC reductase and regulates nitrogenase activity.
CC {ECO:0000256|PIRSR:PIRSR605977-50}.
CC -!- PTM: The reversible ADP-ribosylation of Arg-99 inactivates the
CC nitrogenase reductase and regulates nitrogenase activity.
CC {ECO:0000256|HAMAP-Rule:MF_00533}.
CC -!- SIMILARITY: Belongs to the NifH/BchL/ChlL family.
CC {ECO:0000256|ARBA:ARBA00005504, ECO:0000256|HAMAP-Rule:MF_00533,
CC ECO:0000256|RuleBase:RU003688}.
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DR EMBL; CP000769; ABS27227.1; -; Genomic_DNA.
DR RefSeq; WP_012097841.1; NC_009675.1.
DR AlphaFoldDB; A7HET1; -.
DR STRING; 404589.Anae109_3030; -.
DR KEGG; afw:Anae109_3030; -.
DR eggNOG; COG1348; Bacteria.
DR HOGENOM; CLU_059373_0_0_7; -.
DR OrthoDB; 9778641at2; -.
DR Proteomes; UP000006382; 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 CDD; cd02040; NifH; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 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 NCBIfam; TIGR01287; nifH; 1.
DR PANTHER; PTHR42864; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE IRON-SULFUR ATP-BINDING PROTEIN; 1.
DR PANTHER; PTHR42864:SF2; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE IRON-SULFUR ATP-BINDING PROTEIN; 1.
DR Pfam; PF00142; Fer4_NifH; 1.
DR PIRSF; PIRSF000363; Nitrogenase_iron; 1.
DR PRINTS; PR00091; NITROGNASEII.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 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 {ECO:0000256|HAMAP-Rule:MF_00533, ECO:0000256|RuleBase:RU003688};
KW ADP-ribosylation {ECO:0000256|ARBA:ARBA00022765, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_00533};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW Nitrogen fixation {ECO:0000256|ARBA:ARBA00023231, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00533};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00533}; Reference proteome {ECO:0000313|Proteomes:UP000006382}.
FT BINDING 8..15
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00533"
FT BINDING 96
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000256|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:0000256|HAMAP-Rule:MF_00533"
FT MOD_RES 99
FT /note="ADP-ribosylarginine; by dinitrogenase reductase ADP-
FT ribosyltransferase"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00533,
FT ECO:0000256|PIRSR:PIRSR605977-50"
SQ SEQUENCE 288 AA; 31213 MW; 9B9A5A42F49E25EC CRC64;
MRQIAIYGKG GIGKSTTTQN TVAGLASLGK KVLIVGCDPK ADSTRLMLHA KAQATVMDLV
RERGTVEDLE VADVLKVGYG DVKCVESGGP EPGVGCAGRG VITAINFLEE NGAYTPDLDF
VFYDVLGDVV CGGFAMPIRE NKAEEIYIVV SGEMMAMYAA NNIARGILKY ASSGKVRLGG
LICNSRNTDR EADLIEALAA KLGTQMIHFV PRDNQVQRAE LRRMTVIEYS PEHKQANEYR
ELARKISENK KLVVPKPLQM EELEALLMEF GIIADEDESQ VGVAEAVA
//
