ID   CYSH_ERWT9              Reviewed;         243 AA.
AC   B2VG05;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   25-MAY-2022, entry version 72.
DE   RecName: Full=Phosphoadenosine 5'-phosphosulfate reductase {ECO:0000255|HAMAP-Rule:MF_00063};
DE            Short=PAPS reductase {ECO:0000255|HAMAP-Rule:MF_00063};
DE            EC=1.8.4.8 {ECO:0000255|HAMAP-Rule:MF_00063};
DE   AltName: Full=3'-phosphoadenylylsulfate reductase {ECO:0000255|HAMAP-Rule:MF_00063};
DE   AltName: Full=PAPS reductase, thioredoxin dependent {ECO:0000255|HAMAP-Rule:MF_00063};
DE   AltName: Full=PAPS sulfotransferase {ECO:0000255|HAMAP-Rule:MF_00063};
DE   AltName: Full=PAdoPS reductase {ECO:0000255|HAMAP-Rule:MF_00063};
GN   Name=cysH {ECO:0000255|HAMAP-Rule:MF_00063}; OrderedLocusNames=ETA_27090;
OS   Erwinia tasmaniensis (strain DSM 17950 / CFBP 7177 / CIP 109463 / NCPPB
OS   4357 / Et1/99).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Erwinia.
OX   NCBI_TaxID=465817;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 17950 / CFBP 7177 / CIP 109463 / NCPPB 4357 / Et1/99;
RX   PubMed=18462403; DOI=10.1111/j.1462-2920.2008.01639.x;
RA   Kube M., Migdoll A.M., Mueller I., Kuhl H., Beck A., Reinhardt R.,
RA   Geider K.;
RT   "The genome of Erwinia tasmaniensis strain Et1/99, a non-pathogenic
RT   bacterium in the genus Erwinia.";
RL   Environ. Microbiol. 10:2211-2222(2008).
CC   -!- FUNCTION: Catalyzes the formation of sulfite from phosphoadenosine 5'-
CC       phosphosulfate (PAPS) using thioredoxin as an electron donor.
CC       {ECO:0000255|HAMAP-Rule:MF_00063}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=[thioredoxin]-disulfide + adenosine 3',5'-bisphosphate + 2
CC         H(+) + sulfite = 3'-phosphoadenylyl sulfate + [thioredoxin]-dithiol;
CC         Xref=Rhea:RHEA:11724, Rhea:RHEA-COMP:10698, Rhea:RHEA-COMP:10700,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:17359, ChEBI:CHEBI:29950,
CC         ChEBI:CHEBI:50058, ChEBI:CHEBI:58339, ChEBI:CHEBI:58343; EC=1.8.4.8;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00063};
CC   -!- PATHWAY: Sulfur metabolism; hydrogen sulfide biosynthesis; sulfite from
CC       sulfate: step 3/3. {ECO:0000255|HAMAP-Rule:MF_00063}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00063}.
CC   -!- SIMILARITY: Belongs to the PAPS reductase family. CysH subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00063}.
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DR   EMBL; CU468135; CAO97755.1; -; Genomic_DNA.
DR   RefSeq; WP_012442412.1; NC_010694.1.
DR   AlphaFoldDB; B2VG05; -.
DR   SMR; B2VG05; -.
DR   STRING; 465817.ETA_27090; -.
DR   EnsemblBacteria; CAO97755; CAO97755; ETA_27090.
DR   KEGG; eta:ETA_27090; -.
DR   eggNOG; COG0175; Bacteria.
DR   HOGENOM; CLU_044089_3_0_6; -.
DR   OMA; PIARWTQ; -.
DR   OrthoDB; 674332at2; -.
DR   UniPathway; UPA00140; UER00206.
DR   Proteomes; UP000001726; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004604; F:phosphoadenylyl-sulfate reductase (thioredoxin) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0070814; P:hydrogen sulfide biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0019379; P:sulfate assimilation, phosphoadenylyl sulfate reduction by phosphoadenylyl-sulfate reductase (thioredoxin); IEA:UniProtKB-UniRule.
DR   CDD; cd01713; PAPS_reductase; 1.
DR   Gene3D; 3.40.50.620; -; 1.
DR   HAMAP; MF_00063; CysH; 1.
DR   InterPro; IPR004511; PAPS/APS_Rdtase.
DR   InterPro; IPR002500; PAPS_reduct.
DR   InterPro; IPR011800; PAPS_reductase_CysH.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   Pfam; PF01507; PAPS_reduct; 1.
DR   PIRSF; PIRSF000857; PAPS_reductase; 1.
DR   TIGRFAMs; TIGR00434; cysH; 1.
DR   TIGRFAMs; TIGR02057; PAPS_reductase; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Oxidoreductase; Reference proteome.
FT   CHAIN           1..243
FT                   /note="Phosphoadenosine 5'-phosphosulfate reductase"
FT                   /id="PRO_1000092174"
FT   ACT_SITE        239
FT                   /note="Nucleophile; cysteine thiosulfonate intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00063"
SQ   SEQUENCE   243 AA;  28044 MW;  0CF3A1150BE8D7AE CRC64;
     MALLELSELN QLPKVERVMA LAEINNRLDK LSAEDRVLWG LENLPGQAVL TSSFGIQAAV
     SLHLVTRQKP DIPVILTDTG YLFPETYRFI DQLTEKLDLN LQVFRAEQSP AWQEARYGKL
     WEQGVEGIER YNQINKVEPM NRALETLQGQ TWFAGLRRDQ SGSRAHLPVL AVKKGIFKLL
     PIIDWDNRQV YQYLQQHGLS YHPLWEQGYL SVGDTHTTRK WEPGMAEEET RFFGLKRECG
     LHE