ID   DSRA_CHRVI              Reviewed;         417 AA.
AC   O33998;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   16-JUN-2009, entry version 46.
DE   RecName: Full=Sulfite reductase, dissimilatory-type subunit alpha;
DE            EC=1.8.99.3;
DE   AltName: Full=Hydrogensulfite reductase subunit alpha;
GN   Name=dsrA;
OS   Chromatium vinosum (Allochromatium vinosum).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Chromatiales;
OC   Chromatiaceae; Allochromatium.
OX   NCBI_TaxID=1049;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 17899 / DSM 180 / D;
RX   MEDLINE=97453474; PubMed=9308173;
RA   Hipp W.M., Pott A.S., Thum-Schmitz N., Faath I., Dahl C.,
RA   Trueper H.G.;
RT   "Towards the phylogeny of APS reductases and sirohaem sulfite
RT   reductases in sulfate-reducing and sulfur-oxidizing prokaryotes.";
RL   Microbiology 143:2891-2902(1997).
CC   -!- FUNCTION: Catalyzes the reduction of sulfite to sulfide. This is
CC       the terminal oxidation reaction in sulfate respiration.
CC   -!- CATALYTIC ACTIVITY: (O(3)S.S.SO(3))(2-) + acceptor + 2 H(2)O +
CC       OH(-) = 3 HSO(3)(-) + reduced acceptor.
CC   -!- COFACTOR: Binds 1 4Fe-4S cluster per subunit.
CC   -!- COFACTOR: Binds 2 sirohemes per subunit.
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DR   EMBL; U84760; AAC35394.1; -; Genomic_DNA.
DR   BioCyc; MetaCyc:MON-12320; -.
DR   BRENDA; 1.8.99.3; 2799.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron carrier activity; IEA:InterPro.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0018551; F:hydrogensulfite reductase activity; IEA:EC.
DR   GO; GO:0055114; P:oxidation reduction; IEA:UniProtKB-KW.
DR   InterPro; IPR011806; DsrA.
DR   InterPro; IPR006067; Nir_Sir_4Fe4S.
DR   Pfam; PF01077; NIR_SIR; 1.
DR   TIGRFAMs; TIGR02064; dsrA; 1.
PE   4: Predicted;
KW   4Fe-4S; Heme; Iron; Iron-sulfur; Metal-binding; Oxidoreductase.
FT   CHAIN         1    417       Sulfite reductase, dissimilatory-type
FT                                subunit alpha.
FT                                /FTId=PRO_0000080026.
FT   METAL       170    170       Iron (heme axial ligand) (Potential).
FT   METAL       176    176       Iron (heme axial ligand) (Potential).
FT   METAL       214    214       Iron (heme axial ligand) (Potential).
FT   METAL       218    218       Iron (heme axial ligand) (Potential).
FT   METAL       264    264       Iron-sulfur (4Fe-4S) (Potential).
FT   METAL       284    284       Iron-sulfur (4Fe-4S) (Potential).
FT   METAL       287    287       Iron-sulfur (4Fe-4S) (Potential).
FT   METAL       290    290       Iron-sulfur (4Fe-4S) (Potential).
SQ   SEQUENCE   417 AA;  46791 MW;  474680A622F37B40 CRC64;
     MAIDKHATPM LDQLETGPWP SFISGIKRLR DQHPDARINA VTNDLLGQLE HSYETRKGYW
     KGGTVSVFGY GGGIIPRFSE VGKVFPSSKE FHTVRVQPPA GNHYTTAMLR QLADTWEKYG
     SGLITFHGQT GNIMFIGVDT PNTQNFFDEI NDYGWDLGGA GPCVRTAMSC VGSARCEMSC
     TNELKAHRLL VNNFTDDVHR PALPYKFKFK VSGCPNDCQN AIERSDFAVL GTWRDDMKVD
     QAEVKHYIAD KGRQYYIDNV ITRCPTKALS LNDDDTLDVN NRDCVRCMHC LNVMPKALHP
     GDDKGVTILI GGKRTLKIGD LMGTVVVPFK KLETEEDYES LVELAETIID FWAENGLEHE
     RCGEMIERIG LANFLEGIGI EPDPNMLSHP RQSSYIRMDG WDEAAEEWFA RQAEAGR
//