ID   CYSH_VIBC1              Reviewed;         259 AA.
AC   A7MSZ6;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   10-JUN-2026, entry version 97.
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};
GN   OrderedLocusNames=VIBHAR_00003;
OS   Vibrio campbellii (strain ATCC BAA-1116).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria; Vibrionales;
OC   Vibrionaceae; Vibrio.
OX   NCBI_TaxID=2902295;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1116 / BB120;
RG   The Vibrio harveyi Genome Sequencing Project;
RA   Bassler B., Clifton S.W., Fulton L., Delehaunty K., Fronick C.,
RA   Harrison M., Markivic C., Fulton R., Tin-Wollam A.-M., Shah N., Pepin K.,
RA   Nash W., Thiruvilangam P., Bhonagiri V., Waters C., Tu K.C., Irgon J.,
RA   Wilson R.K.;
RL   Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases.
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 + sulfite + adenosine 3',5'-
CC         bisphosphate + 2 H(+) = [thioredoxin]-dithiol + 3'-phosphoadenylyl
CC         sulfate; Xref=Rhea:RHEA:11724, Rhea:RHEA-COMP:10698, Rhea:RHEA-
CC         COMP:10700, 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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000789; ABU69063.1; -; Genomic_DNA.
DR   RefSeq; WP_005536432.1; NC_009783.1.
DR   AlphaFoldDB; A7MSZ6; -.
DR   SMR; A7MSZ6; -.
DR   KEGG; vha:VIBHAR_00003; -.
DR   PATRIC; fig|338187.25.peg.2518; -.
DR   UniPathway; UPA00140; UER00206.
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-UniRule.
DR   GO; GO:0019379; P:sulfate assimilation, phosphoadenylyl sulfate reduction by phosphoadenylyl-sulfate reductase (thioredoxin); IEA:UniProtKB-UniRule.
DR   CDD; cd23945; PAPS_reductase; 1.
DR   FunFam; 3.40.50.620:FF:000043; Phosphoadenosine phosphosulfate reductase; 1.
DR   Gene3D; 3.40.50.620; HUPs; 1.
DR   HAMAP; MF_00063; CysH; 1.
DR   InterPro; IPR004511; PAPS/APS_Rdtase.
DR   InterPro; IPR002500; PAPS_reduct_dom.
DR   InterPro; IPR011800; PAPS_reductase_CysH.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   NCBIfam; TIGR00434; cysH; 1.
DR   NCBIfam; TIGR02057; PAPS_reductase; 1.
DR   NCBIfam; NF002537; PRK02090.1; 1.
DR   PANTHER; PTHR46509; PHOSPHOADENOSINE PHOSPHOSULFATE REDUCTASE; 1.
DR   PANTHER; PTHR46509:SF1; PHOSPHOADENOSINE PHOSPHOSULFATE REDUCTASE; 1.
DR   Pfam; PF01507; PAPS_reduct; 1.
DR   PIRSF; PIRSF000857; PAPS_reductase; 1.
DR   SUPFAM; SSF52402; Adenine nucleotide alpha hydrolases-like; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Oxidoreductase.
FT   CHAIN           1..259
FT                   /note="Phosphoadenosine 5'-phosphosulfate reductase"
FT                   /id="PRO_1000008943"
FT   ACT_SITE        244
FT                   /note="Nucleophile; cysteine thiosulfonate intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00063"
SQ   SEQUENCE   259 AA;  29734 MW;  B9FF2657D2ADE09E CRC64;
     MLDSVASKPE LAELLTLTKT EQILRLAQIN VELEQLSAQE RVKWALENLE GEFAVSSSFG
     IQAAVMLHLV TQQKPDIPII LTDTGYLFAE TYQFIDQLKA QLNLNLKVYR AKESANWQEA
     RYGKLWEQGI EGIEKYNKIN KVEPMRRALR EQNVGTWFSG LRREQSQSRA GLPILSIQNG
     VFKFLPVIDW TNKDVHYYLE EHGLSYHPLW EQGYLSVGDT HTSRKWEPGM SEEETRFFGL
     KRECGLHEDD GSEQDGSGI
//