View source for Quercetin-3-sulfate 4'-sulfotransferase

In [[enzymology]], a '''quercetin-3-sulfate 4'-sulfotransferase''' ({{EC number|2.8.2.27}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:3'-phosphoadenylyl sulfate + quercetin 3-sulfate <math>\rightleftharpoons</math> adenosine 3',5'-bisphosphate + quercetin 3,4'-bissulfate

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[3'-phosphoadenylyl sulfate]] and [[quercetin 3-sulfate]], whereas its two [[product (chemistry)|products]] are [[adenosine 3',5'-bisphosphate]] and [[quercetin 3,4'-bissulfate]].

This enzyme belongs to the family of [[transferase]]s, specifically the sulfotransferases, which transfer sulfur-containing groups.  The systematic name of this enzyme class is '''3'-phosphoadenylyl-sulfate:quercetin-3-sulfate 4'-sulfotransferase'''. Other names in common use include '''flavonol 4'-sulfotransferase''', and '''PAPS:flavonol 3-sulfate 4'-sulfotransferase'''.  

==References==
{{reflist|1}}
{{Enzyme references|EC_number=2.8.2.27|IUBMB_EC_number=2/8/2/27}}
* {{cite journal | author = Varin L and Ibrahim RK | date = 1989 | title = Partial purification and characterization of 3 flavonol-specific sulfotransferases from Flaveria chloraefolia | journal = Plant Physiol.  | volume = 90 | pages = 977&ndash;981 | doi = 10.1104/pp.90.3.977 }}

==External links==
::''The [[CAS registry number]] for this enzyme class is {{CAS registry|121855-12-7}}.''
{{Enzyme links|EC_number=2.8.2.27|IUBMB_EC_number=2/8/2/27}}

===Gene Ontology (GO) codes===
{{GO code links | GO_code=0047366 | name=quercetin-3-sulfate 4'-sulfotransferase}}

[[Category:EC 2.8.2]]
[[Category:Enzymes of unknown structure]]