ID Q7V3J4_PROMP Unreviewed; 240 AA.
AC Q7V3J4;
DT 01-OCT-2003, integrated into UniProtKB/TrEMBL.
DT 01-OCT-2003, sequence version 1.
DT 27-MAR-2024, entry version 119.
DE RecName: Full=Phosphoadenosine 5'-phosphosulfate reductase {ECO:0000256|HAMAP-Rule:MF_00063};
DE Short=PAPS reductase {ECO:0000256|HAMAP-Rule:MF_00063};
DE EC=1.8.4.8 {ECO:0000256|HAMAP-Rule:MF_00063};
DE AltName: Full=3'-phosphoadenylylsulfate reductase {ECO:0000256|HAMAP-Rule:MF_00063};
DE AltName: Full=PAPS reductase, thioredoxin dependent {ECO:0000256|HAMAP-Rule:MF_00063};
DE AltName: Full=PAPS sulfotransferase {ECO:0000256|HAMAP-Rule:MF_00063};
DE AltName: Full=PAdoPS reductase {ECO:0000256|HAMAP-Rule:MF_00063};
GN Name=cysH {ECO:0000256|HAMAP-Rule:MF_00063,
GN ECO:0000313|EMBL:CAE18540.1};
GN OrderedLocusNames=PMM0081 {ECO:0000313|EMBL:CAE18540.1};
OS Prochlorococcus marinus subsp. pastoris (strain CCMP1986 / NIES-2087 /
OS MED4).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Synechococcales;
OC Prochlorococcaceae; Prochlorococcus.
OX NCBI_TaxID=59919 {ECO:0000313|EMBL:CAE18540.1, ECO:0000313|Proteomes:UP000001026};
RN [1] {ECO:0000313|EMBL:CAE18540.1, ECO:0000313|Proteomes:UP000001026}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCMP1986 / NIES-2087 / MED4
RC {ECO:0000313|Proteomes:UP000001026};
RX PubMed=12917642; DOI=10.1038/nature01947;
RA Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA Chisholm S.W.;
RT "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT differentiation.";
RL Nature 424:1042-1047(2003).
CC -!- FUNCTION: Catalyzes the formation of sulfite from phosphoadenosine 5'-
CC phosphosulfate (PAPS) using thioredoxin as an electron donor.
CC {ECO:0000256|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:0000256|HAMAP-Rule:MF_00063};
CC -!- PATHWAY: Sulfur metabolism; hydrogen sulfide biosynthesis; sulfite from
CC sulfate: step 3/3. {ECO:0000256|HAMAP-Rule:MF_00063}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00063}.
CC -!- SIMILARITY: Belongs to the PAPS reductase family. CysH subfamily.
CC {ECO:0000256|ARBA:ARBA00009732, ECO:0000256|HAMAP-Rule:MF_00063}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00063}.
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DR EMBL; BX548174; CAE18540.1; -; Genomic_DNA.
DR RefSeq; WP_011131719.1; NC_005072.1.
DR AlphaFoldDB; Q7V3J4; -.
DR STRING; 59919.PMM0081; -.
DR KEGG; pmm:PMM0081; -.
DR eggNOG; COG0175; Bacteria.
DR HOGENOM; CLU_044089_3_0_3; -.
DR OrthoDB; 9772604at2; -.
DR UniPathway; UPA00140; UER00206.
DR Proteomes; UP000001026; 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; HUPs; 1.
DR HAMAP; MF_00063; CysH; 1.
DR InterPro; IPR004511; PAPS/APS_Rdtase.
DR InterPro; IPR002500; PAPS_reduct.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR NCBIfam; TIGR00434; cysH; 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 {ECO:0000256|HAMAP-Rule:MF_00063};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00063}.
FT DOMAIN 40..215
FT /note="Phosphoadenosine phosphosulphate reductase"
FT /evidence="ECO:0000259|Pfam:PF01507"
FT ACT_SITE 234
FT /note="Nucleophile; cysteine thiosulfonate intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00063"
SQ SEQUENCE 240 AA; 28057 MW; 22E7A9C3E570115E CRC64;
MIKKTLESIQ LNLEGHNKKL KDMTPKEIIL WGYKNFGNQF AITTSFGIQS SVILHMVHQH
SLQKKIKIFW IDTGYLPSET YKYAERLIND LSLEIEVLQS ELSPARMESL YGKLWETNKS
SDLDKYHDIR KIKPLENALD KHDIFCWASG VRSEQTKNRN KMNFVDVIRK RLSLRPLLNW
KNKDIFYYMK ENQLPSHPLF SKGYSTVGDW HSSSPESVDK EGRTTRFGGM KQECGIHTEN
//
