Flavonol 3-sulfotransferase

Class of enzymes

flavonol 3-sulfotransferase

Identifiers
EC no.| 2.8.2.25
CAS no.| 121855-10-5
Databases
IntEnz| IntEnz view
BRENDA| BRENDA entry
ExPASy| NiceZyme view
KEGG| KEGG entry
MetaCyc| metabolic pathway
PRIAM| profile
PDB structures| RCSB PDB PDBe PDBsum
Gene Ontology| AmiGO  / QuickGO
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PMC| articles
PubMed| articles
NCBI| proteins

In enzymology, a flavonol 3-sulfotransferase (EC 2.8.2.25) is an enzyme that catalyzes the chemical reaction

3'-phosphoadenylyl sulfate + flavonol ⇌ {\displaystyle \rightleftharpoons } adenosine 3',5'-bisphosphate + flavonol 3-sulfate

Thus, the two substrates of this enzyme are 3'-phosphoadenylyl sulfate and a flavonol, whereas its two products are adenosine 3',5'-bisphosphate and flavonol 3-sulfate. A specific examples of a flavonol that can act as a substrate is quercetin.[1]

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

## References

[edit]

1. ^ Varin L, Ibrahim RK (July 1989). "Partial Purification and Characterization of Three Flavonol-Specific Sulfotransferases from Flaveria chloraefolia". Plant Physiology. 90 (3): 977–81. doi:10.1104/pp.90.3.977. PMC 1061831. PMID 16666908.

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Transferases: sulfur-containing group (EC 2.8)

2.8.1: Sulfurtransferases|

* Thiosulfate sulfurtransferase
* Rhodanese
* 3-mercaptopyruvate sulfurtransferase
* thiosulfate—thiol sulfurtransferase
* tRNA sulfurtransferase
* thiosulfate—dithiol sulfurtransferase
* biotin synthase
* cysteine desulfurase

2.8.2: Sulfotransferases|

* Alcohol sulfotransferase
* Tyrosylprotein sulfotransferase
* Aryl sulfotransferase

2.8.3: CoA-transferases|

* Propionate CoA-transferase

2.8.4: Alkylthio|

* Coenzyme-B sulfoethylthiotransferase

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Enzymes

Activity|

* Active site
* Binding site
* Catalytic triad
* Oxyanion hole
* Enzyme promiscuity
* Diffusion-limited enzyme
* Cofactor
* Enzyme catalysis

Regulation|

* Allosteric regulation
* Cooperativity
* Enzyme inhibitor
* Enzyme activator

Classification|

* EC number
* Enzyme superfamily
* Enzyme family
* List of enzymes

Kinetics|

* Enzyme kinetics
* Eadie–Hofstee diagram
* Hanes–Woolf plot
* Lineweaver–Burk plot
* Michaelis–Menten kinetics

Types|

* EC1 Oxidoreductases (list)
* EC2 Transferases (list)
* EC3 Hydrolases (list)
* EC4 Lyases (list)
* EC5 Isomerases (list)
* EC6 Ligases (list)
* EC7 Translocases (list)

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