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In enzymology, a phosphoadenylylsulfatase (EC is an enzyme that catalyzes the chemical reaction

3'-phosphoadenylyl sulfate + H2O adenosine 3',5'-bisphosphate + sulfate

Thus, the two substrates of this enzyme are 3'-phosphoadenylyl sulfate and H2O, whereas its two products are adenosine 3',5'-bisphosphate and sulfate.

This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides in sulfonyl-containing anhydrides. The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate sulfohydrolase. Other names in common use include 3-phosphoadenylyl sulfatase, 3-phosphoadenosine 5-phosphosulfate sulfatase, PAPS sulfatase, and 3'-phosphoadenylylsulfate sulfohydrolase. This enzyme participates in sulfur metabolism. It employs one cofactor, manganese.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
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  • BALASUBRAMANIAN AS, BACHHAWAT BK (1962). "Enzymic degradation of active sulphate". Biochim. Biophys. Acta. 59: 389&ndash, 97. PMID 13864264.

External links

The CAS registry number for this enzyme class is 37289-37-5.

Gene Ontology (GO) codes