ID   ANFG_RUMHU              Reviewed;         132 AA.
AC   Q46083;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   20-DEC-2005, sequence version 2.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=Nitrogenase iron-iron protein delta chain;
DE            EC=1.18.6.1;
DE   AltName: Full=Dinitrogenase 3 subunit delta;
DE   AltName: Full=Nitrogenase 3 subunit G;
DE   AltName: Full=Nitrogenase component I;
GN   Name=anfG;
OS   Ruminiclostridium hungatei (Clostridium hungatei).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Oscillospiraceae;
OC   Ruminiclostridium.
OX   NCBI_TaxID=48256;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=B3B;
RA   Chen T., Leschine S.B.;
RL   Submitted (MAY-1996) 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 (component 2) and a component 1 which is either a molybdenum-
CC       iron protein, a vanadium-iron, or an iron-iron protein.
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=iron-sulfur cluster; Xref=ChEBI:CHEBI:30408;
CC         Evidence={ECO:0000250};
CC   -!- SUBUNIT: Hexamer of two alpha, two beta, and two delta chains.
CC       {ECO:0000250}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAB02936.1; Type=Frameshift; Evidence={ECO:0000305};
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DR   EMBL; U59415; AAB02936.1; ALT_FRAME; Genomic_DNA.
DR   AlphaFoldDB; Q46083; -.
DR   SMR; Q46083; -.
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:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0051536; F:iron-sulfur cluster 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   InterPro; IPR014278; Nase_Fe-Fe_dsu.
DR   InterPro; IPR004349; V/Nase_d_su.
DR   Pfam; PF03139; AnfG_VnfG; 1.
DR   TIGRFAMs; TIGR02929; anfG_nitrog; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Iron; Iron-sulfur; Metal-binding; Nitrogen fixation;
KW   Nucleotide-binding; Oxidoreductase.
FT   CHAIN           1..132
FT                   /note="Nitrogenase iron-iron protein delta chain"
FT                   /id="PRO_0000213565"
SQ   SEQUENCE   132 AA;  15526 MW;  D4C1D3D69B4C03A1 CRC64;
     MSTAFAAAVV KQKVEAPISP MDARIDELTD YIMKTLLWQF HSRSWDRERQ NAEILKKTKE
     LLCGEPVDLS TSHDRCYWVD AVCLADDYRE HYPWINSMSK EEIGSLMQGL KDRMDYLTIH
     RLLNEELSDK HY