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CYSJ_ECOK1
ID   CYSJ_ECOK1              Reviewed;         599 AA.
AC   A1AEV0;
DT   26-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 92.
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=Ecok1_26960;
GN   ORFNames=APECO1_3768;
OS   Escherichia coli O1:K1 / APEC.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=405955;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=17293413; DOI=10.1128/jb.01726-06;
RA   Johnson T.J., Kariyawasam S., Wannemuehler Y., Mangiamele P., Johnson S.J.,
RA   Doetkott C., Skyberg J.A., Lynne A.M., Johnson J.R., Nolan L.K.;
RT   "The genome sequence of avian pathogenic Escherichia coli strain O1:K1:H7
RT   shares strong similarities with human extraintestinal pathogenic E. coli
RT   genomes.";
RL   J. Bacteriol. 189:3228-3236(2007).
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; CP000468; ABJ02190.1; -; Genomic_DNA.
DR   RefSeq; WP_000211914.1; NC_008563.1.
DR   AlphaFoldDB; A1AEV0; -.
DR   BMRB; A1AEV0; -.
DR   SMR; A1AEV0; -.
DR   EnsemblBacteria; ABJ02190; ABJ02190; APECO1_3768.
DR   KEGG; ecv:APECO1_3768; -.
DR   HOGENOM; CLU_001570_17_7_6; -.
DR   OMA; QKRYQRD; -.
DR   UniPathway; UPA00140; UER00207.
DR   Proteomes; UP000008216; 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..599
FT                   /note="Sulfite reductase [NADPH] flavoprotein alpha-
FT                   component"
FT                   /id="PRO_0000292967"
FT   DOMAIN          64..202
FT                   /note="Flavodoxin-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   DOMAIN          234..448
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
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         322
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         356
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         386..389
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         404..406
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         410
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         419..422
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         519..520
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         525..529
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         561
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
FT   BINDING         599
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01541"
SQ   SEQUENCE   599 AA;  66312 MW;  9E957AD0872A050E CRC64;
     MTTQVPPSAL LPLNPEQLAR LQAATTDLTP TQLAWVSGYF WGVLNQQPAA LAATPAPAAE
     MPGITIISAS QTGNARRVAE ALRDDLLAAK LNVKLVNAGD YKFKQIASEK LLIVVTSTQG
     EGEPPEEAVA LHKFLFSKKA PKLENTAFAV FSLGDSSYEF FCQSGKDFDS KLAELGGERL
     LDRVDADVEY QAAASEWRAR VVDALKSRAP VAAPSQSVAT GTVNEIHTSP YSKDAPLAAS
     LSVNQKITGR NSEKDVRHIE IDLGDSGLRY QPGDALGVWY QNDPALVKEL VELLWLKGDE
     PVTVEGKTLP LNEALQWHFE LTVNTANIVE NYATLTRSET LLPLVGDKAK LQHYAATTPI
     VDMVRFSPAQ LDAEALINLL RPLTPRLYSI ASSQAEVENE VHVTVGVVRY DVEGRARAGG
     ASSFLADRVE EEGEVRVFIE HNDNFRLPTN PETPVIMIGP GTGIAPFRAF MQQRAADEAP
     GKNWLFFGNP HFTEDFLYQV EWQRYVKEGV LTRIDLAWSR DQKEKIYVQD KLREQGAELW
     RWINDGAHIY VCGDANRMAK DVEQALLEVI AEFGGMDTEA ADEFLSELRV ERRYQRDVY
 
 
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