Flavonol 3-sulfotransferase

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In enzymology, a flavonol 3-sulfotransferase (EC is an enzyme that catalyzes the chemical reaction

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

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

This enzyme belongs to the family of transferases, specifically the sulfotransferases, which transfer sulfur-containing groups. The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate:quercetin 3-sulfotransferase.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
  • PubMed Central references for
  • Google Scholar references for
  • Varin L and Ibrahim RK (1989). "Partial purification and characterization of 3 flavonol-specific sulfotransferases from Flaveria chloraefolia". Plant Physiol. 90: 977&ndash, 981.

External links

The CAS registry number for this enzyme class is 121855-10-5.

Gene Ontology (GO) codes