ID   CYSJ_ECOHS              Reviewed;         599 AA.
AC   A8A3P5;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   16-JUN-2009, entry version 15.
DE   RecName: Full=Sulfite reductase [NADPH] flavoprotein alpha-component;
DE            Short=SIR-FP;
DE            EC=1.8.1.2;
GN   Name=cysJ; OrderedLocusNames=EcHS_A2904;
OS   Escherichia coli O9:H4 (strain HS).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=331112;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=18676672; DOI=10.1128/JB.00619-08;
RA   Rasko D.A., Rosovitz M.J., Myers G.S.A., Mongodin E.F., Fricke W.F.,
RA   Gajer P., Crabtree J., Sebaihia M., Thomson N.R., Chaudhuri R.,
RA   Henderson I.R., Sperandio V., Ravel J.;
RT   "The pangenome structure of Escherichia coli: comparative genomic
RT   analysis of E. coli commensal and pathogenic isolates.";
RL   J. Bacteriol. 190:6881-6893(2008).
CC   -!- FUNCTION: Catalyzes the 6-electron reduction of sulfite to
CC       sulfide. This is one of several activities required for the
CC       biosynthesis of L-cysteine from sulfate. The flavo-protein
CC       component catalyzes the electron flow from NADPH -> FAD -> FMN to
CC       the hemoprotein component (By similarity).
CC   -!- CATALYTIC ACTIVITY: H(2)S + 3 NADP(+) + 3 H(2)O = sulfite + 3
CC       NADPH.
CC   -!- COFACTOR: Binds 1 FAD per subunit (By similarity).
CC   -!- COFACTOR: Binds 1 FMN per subunit (By similarity).
CC   -!- SUBUNIT: Alpha(8)-beta(8). The alpha component is a flavoprotein,
CC       the beta component is a hemoprotein (By similarity).
CC   -!- SIMILARITY: Contains 1 FAD-binding FR-type domain.
CC   -!- SIMILARITY: Contains 1 flavodoxin-like domain.
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DR   EMBL; CP000802; ABV07149.1; -; Genomic_DNA.
DR   RefSeq; YP_001459532.1; -.
DR   GeneID; 5592258; -.
DR   GenomeReviews; CP000802_GR; EcHS_A2904.
DR   KEGG; ecx:EcHS_A2904; -.
DR   OMA; A8A3P5; FHKDGAL.
DR   GO; GO:0009055; F:electron carrier activity; IEA:InterPro.
DR   GO; GO:0010181; F:FMN binding; IEA:InterPro.
DR   GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0004783; F:sulfite reductase (NADPH) activity; IEA:HAMAP.
DR   GO; GO:0019344; P:cysteine biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0022900; P:electron transport chain; IEA:UniProtKB-KW.
DR   GO; GO:0000103; P:sulfate assimilation; IEA:HAMAP.
DR   GO; GO:0006810; P:transport; IEA:UniProtKB-KW.
DR   HAMAP; MF_01541; -; 1.
DR   InterPro; IPR010199; CysJ.
DR   InterPro; IPR003097; FAD-binding_1.
DR   InterPro; IPR017927; Fd_Rdtase_FAD-bd.
DR   InterPro; IPR001094; Flavdoxin-like.
DR   InterPro; IPR008254; Flavodoxin/NO_synth.
DR   InterPro; IPR001709; Flavoprot_Pyr_Nucl_cyt_Rdtase.
DR   InterPro; IPR001433; OxRdtase_FAD/NAD_bd.
DR   Pfam; PF00667; FAD_binding_1; 1.
DR   Pfam; PF00258; Flavodoxin_1; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   PRINTS; PR00369; FLAVODOXIN.
DR   PRINTS; PR00371; FPNCR.
DR   TIGRFAMs; TIGR01931; cysJ; 1.
DR   PROSITE; PS51384; FAD_FR; 1.
DR   PROSITE; PS50902; FLAVODOXIN_LIKE; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Complete proteome; Cysteine biosynthesis;
KW   Electron transport; FAD; Flavoprotein; FMN; NADP; Oxidoreductase;
KW   Transport.
FT   CHAIN         1    599       Sulfite reductase [NADPH] flavoprotein
FT                                alpha-component.
FT                                /FTId=PRO_1000087633.
FT   DOMAIN       64    202       Flavodoxin-like.
FT   DOMAIN      234    448       FAD-binding FR-type.
FT   NP_BIND      70     74       FMN (By similarity).
FT   NP_BIND     150    181       FMN (By similarity).
FT   NP_BIND     236    288       FAD (By similarity).
FT   NP_BIND     472    599       NADP (By similarity).
SQ   SEQUENCE   599 AA;  66342 MW;  16C59722178A85C0 CRC64;
     MTTQVPPSAL LPLNPEQLAR LQAATTDLTP TQLAWVSGYF WGVLNQQPAA LAATPAPAAE
     MPGITIISAS QTGNARRVAE ALRDDLLTAK LNVKLVNAGD YKFKQIASEK LLIVVTSTQG
     EGEPPEEAVA LHKFLFSKKA PKLENTAFAV FSLGDSSYEF FCQSGKDFDS KLAELGGERL
     LDRVDADVEY QTAASEWRAR VVDALKSRAP VAAPSQSVAT GAVNEIHTSP YSKDSPLVAS
     LSVNQKITGR NSEKDVRHIE IDLGDSGLRY QPGDALGVWY QNDPALVKEL VELLWLKGDE
     PVTVEGKTLP LNEALQWHFE LTVNTANIVE NYATLTRSET LLPLVGDKAK LQHYAATTPI
     VDMVRFSPAQ LDAEALINLL RPLTPRLYSI ASSQAEVENE VHVTVGVVRY DVEGRARAGG
     ASSFLADRVE EEGEVRVFIE HNDNFRLPAN PETPVIMIGP GTGIAPFRAF MQQRAADEAP
     GKNWLFFGNP HFTEDFLYQV EWQRYVKEGV LTRIDLAWSR DQKEKVYVQD KLREQGAELW
     RWINDGAHIY VCGDANRMAK DVEQALLEVI AEFGGMDTEA ADEFLSELRV ERRYQRDVY
//