Quercetin-3,3'-bissulfate 7-sulfotransferase
class of enzymes
Quercetin-3,3'-bissulfate 7-sulfotransferase (EC 2.8.2.28) is an enzyme that catalyzes the chemical reaction
It uses the cofactor 3'-phosphoadenosine-5'-phosphosulfate (PAPS) to transfer a sulfate group and gives adenosine 3',5'-bisphosphate as a byproduct. The enzyme characterised from Flaveria chlorifolia converts quercetin 3,3'-bissulfate to quercetin 3,3',7-trisulfate. This is part of a sequence of similar reactions which sequentially add sulfate groups to quercetin.
This enzyme is a transferase, specifically a sulfotransferase, which transfer sulfur-containing groups. The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate:quercetin-3,3'-bissulfate 7-sulfotransferase. Other names in common use include flavonol 7-sulfotransferase, 7-sulfotransferase, and PAPS:flavonol 3,3'/3,4'-disulfate 7-sulfotransferase.
The public source identifies “Quercetin-3,3'-bissulfate 7-sulfotransferase” as class of enzymes. This brief keeps that definition visible, then builds a research path around Quercetin-3, 3'-bissulfate and 7-sulfotransferase.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Quercetin-3,3'-bissulfate 7-sulfotransferase”, the useful work is to connect “class of enzymes” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 8, 2026. The linked authority identifier is Q7271317. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Quercetin-3,3'-bissulfate 7-sulfotransferase”, its source revision and the description used here.
- Expand the search: follow Quercetin-3,3'-bissulfate 7-sulfotransferase primary sources, Quercetin-3,3'-bissulfate 7-sulfotransferase archive and Quercetin-3 research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Quercetin-3,3'-bissulfate 7-sulfotransferase”?
- Which institution is responsible for the underlying evidence?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Quercetin-3,3'-bissulfate 7-sulfotransferase” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.