Reaction: 3'-phosphoadenylyl sulfate + quercetin 3,3'-bissulfate = adenosine 3',5'-bisphosphate + quercetin 3,7,3'-trissulfate
For diagram click here.
Glossary: 3'-phosphoadenylyl sulfate = PAPS
Other names: flavonol 7-sulfotransferase; 7-sulfotransferase; PAPS:flavonol 3,3'/3,4'-disulfate 7-sulfotransferase; 3'-phosphoadenylyl-sulfate:quercetin-3,3'-bissulfate 7-sulfotransferase
Systematic name: 3'-phosphoadenylyl-sulfate:quercetin-3,3'-bissulfate 7-sulfonotransferase
Comments: Quercetin 3,4'-bissulfate can also act as acceptor.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 121855-13-8
References:
1. Varin, L. Enzymatic synthesis of sulfated flavonoids in Flaveria spp. Bull. Liaison-Groupe Polyphenols 14 (1988) 248-257.