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CYSJ_YERPA
ID   CYSJ_YERPA              Reviewed;         606 AA.
AC   Q1C3Z0;
DT   26-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=Sulfite reductase [NADPH] flavoprotein alpha-component {ECO:0000255|HAMAP-Rule:MF_01541};
DE            Short=SiR-FP {ECO:0000255|HAMAP-Rule:MF_01541};
DE            EC=1.8.1.2 {ECO:0000255|HAMAP-Rule:MF_01541};
GN   Name=cysJ {ECO:0000255|HAMAP-Rule:MF_01541}; OrderedLocusNames=YPA_2870;
OS   Yersinia pestis bv. Antiqua (strain Antiqua).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Yersinia.
OX   NCBI_TaxID=360102;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Antiqua;
RX   PubMed=16740952; DOI=10.1128/jb.00124-06;
RA   Chain P.S.G., Hu P., Malfatti S.A., Radnedge L., Larimer F., Vergez L.M.,
RA   Worsham P., Chu M.C., Andersen G.L.;
RT   "Complete genome sequence of Yersinia pestis strains Antiqua and Nepal516:
RT   evidence of gene reduction in an emerging pathogen.";
RL   J. Bacteriol. 188:4453-4463(2006).
CC   -!- FUNCTION: Component of the sulfite reductase complex that catalyzes the
CC       6-electron reduction of sulfite to sulfide. This is one of several
CC       activities required for the biosynthesis of L-cysteine from sulfate.
CC       The flavoprotein component catalyzes the electron flow from NADPH ->
CC       FAD -> FMN to the hemoprotein component. {ECO:0000255|HAMAP-
CC       Rule:MF_01541}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=3 H2O + hydrogen sulfide + 3 NADP(+) = 4 H(+) + 3 NADPH +
CC         sulfite; Xref=Rhea:RHEA:13801, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:17359, ChEBI:CHEBI:29919, ChEBI:CHEBI:57783,
CC         ChEBI:CHEBI:58349; EC=1.8.1.2; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01541};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01541};
CC       Note=Binds 1 FAD per subunit. {ECO:0000255|HAMAP-Rule:MF_01541};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01541};
CC       Note=Binds 1 FMN per subunit. {ECO:0000255|HAMAP-Rule:MF_01541};
CC   -!- PATHWAY: Sulfur metabolism; hydrogen sulfide biosynthesis; hydrogen
CC       sulfide from sulfite (NADPH route): step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_01541}.
CC   -!- SUBUNIT: Alpha(8)-beta(8). The alpha component is a flavoprotein, the
CC       beta component is a hemoprotein. {ECO:0000255|HAMAP-Rule:MF_01541}.
CC   -!- SIMILARITY: Belongs to the NADPH-dependent sulphite reductase
CC       flavoprotein subunit CysJ family. {ECO:0000255|HAMAP-Rule:MF_01541}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the flavodoxin
CC       family. {ECO:0000255|HAMAP-Rule:MF_01541}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the flavoprotein
CC       pyridine nucleotide cytochrome reductase family. {ECO:0000255|HAMAP-
CC       Rule:MF_01541}.
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DR   EMBL; CP000308; ABG14832.1; -; Genomic_DNA.
DR   RefSeq; WP_002209381.1; NZ_CP009906.1.
DR   AlphaFoldDB; Q1C3Z0; -.
DR   SMR; Q1C3Z0; -.
DR   EnsemblBacteria; ABG14832; ABG14832; YPA_2870.
DR   GeneID; 57975336; -.
DR   KEGG; ypa:YPA_2870; -.
DR   OMA; QKRYQRD; -.
DR   UniPathway; UPA00140; UER00207.
DR   Proteomes; UP000001971; Chromosome.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR   GO; GO:0010181; F:FMN binding; IEA:InterPro.
DR   GO; GO:0004783; F:sulfite reductase (NADPH) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019344; P:cysteine biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0070814; P:hydrogen sulfide biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0000103; P:sulfate assimilation; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.990.10; -; 1.
DR   Gene3D; 3.40.50.360; -; 1.
DR   Gene3D; 3.40.50.80; -; 1.
DR   HAMAP; MF_01541; CysJ; 1.
DR   InterPro; IPR010199; CysJ.
DR   InterPro; IPR003097; CysJ-like_FAD-binding.
DR   InterPro; IPR029758; CysJ_Proteobact.
DR   InterPro; IPR017927; FAD-bd_FR_type.
DR   InterPro; IPR001094; Flavdoxin-like.
DR   InterPro; IPR008254; Flavodoxin/NO_synth.
DR   InterPro; IPR001709; Flavoprot_Pyr_Nucl_cyt_Rdtase.
DR   InterPro; IPR029039; Flavoprotein-like_sf.
DR   InterPro; IPR039261; FNR_nucleotide-bd.
DR   InterPro; IPR023173; NADPH_Cyt_P450_Rdtase_alpha.
DR   InterPro; IPR001433; OxRdtase_FAD/NAD-bd.
DR   InterPro; IPR017938; Riboflavin_synthase-like_b-brl.
DR   Pfam; PF00667; FAD_binding_1; 1.
DR   Pfam; PF00258; Flavodoxin_1; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   PIRSF; PIRSF000207; SiR-FP_CysJ; 1.
DR   PRINTS; PR00369; FLAVODOXIN.
DR   PRINTS; PR00371; FPNCR.
DR   SUPFAM; SSF52218; SSF52218; 1.
DR   SUPFAM; SSF52343; SSF52343; 1.
DR   SUPFAM; SSF63380; SSF63380; 1.
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; Cysteine biosynthesis; Electron transport; FAD;
KW   Flavoprotein; FMN; NADP; Oxidoreductase; Transport.
FT   CHAIN           1..606
FT                   /note="Sulfite reductase [NADPH] flavoprotein alpha-
FT                   component"
FT                   /id="PRO_0000292979"
FT   DOMAIN          64..202
FT                   /note="Flavodoxin-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   DOMAIN          241..455
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   REGION          212..235
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         70..75
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         117..120
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         153..162
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         329
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         363
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         393..396
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         411..413
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         417
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         426..429
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         526..527
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         532..536
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         568
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         606
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
SQ   SEQUENCE   606 AA;  66625 MW;  777527708C4FFD98 CRC64;
     MTTQAPPTSL LPLSPEQLAR LQAAVGEFSP TQMAWLSGYF WGMVNQQPGA VASPAVAAPP
     PVTVTLISAS QTGNARRLAE QLRDDLLAAQ LSVNLVNAGD YKFKQIAQER LLVVVASTQG
     EGEPAEEAVA LHKFLFSKKA PKLSETAFAV FGLGDTSYEH FCQAGKDFDS KLAELGAQRL
     LDRVDADVEY QVQAQQWRQQ VVATLQAKVP AQSTAPTQST TPAAAAITSG GTTTVSPYSK
     TAPLTAQLSV QQKVTGRNSE KDVRHIEIDL GDSGLRYQPG DALGVWFDND PALVEELLAL
     LWLKGDEPVS IDGQNMPLAQ ALLSHLELTQ NTTLIVDKYA ALSRDETLIA LLADKPALQL
     YAKNTPFVDM VRQAPSDLNA DQLVGLLRPL TPRLYSIASS QAETENEVHI TVGVVRYDID
     GRARSGGASG YLADRLEVDG DIRVFIEHND NFRLPANPET PVIMIGPGTG IAPFRAFMQQ
     REVDGASGKN WLFFGNPHFT EDFLYQVEWQ RYVKEGVLTR IDLAWSRDQA HKIYVQDKLR
     EQGAELWNWI QQGAHIYVCG DANRMAKDVE QVLLDVVALH GAMDAEQADE YLSELRQARR
     YQRDVY
 
 
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