Flavone apiosyltransferase

From Wikipedia, the free encyclopedia

In enzymology, a flavone apiosyltransferase (EC 2.4.2.25) is an enzyme that catalyzes the chemical reaction

UDP-apiose + 5,7,4'-trihydroxyflavone 7-O-beta-D-glucoside UDP + 5,7,4'-trihydroxyflavone 7-O-[beta-D-apiosyl-(1->2)-beta-D-glucoside]

Thus, the two substrates of this enzyme are UDP-apiose and 5,7,4'-trihydroxyflavone 7-O-beta-D-glucoside, whereas its 3 products are UDP, 5,7,4'-trihydroxyflavone, and [[7-O-[beta-D-apiosyl-(1->2)-beta-D-glucoside]]].

This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is UDP-apiose:5,4'-dihydroxyflavone 7-O-beta-D-glucoside 2-O-beta-D-apiofuranosyltransferase. Other names in common use include uridine diphosphoapiose-flavone apiosyltransferase, and UDP-apiose:7-O-(beta-D-glucosyl)-flavone apiosyltransferase. This enzyme participates in flavonoid biosynthesis.

[edit] References

• IUBMB entry for 2.4.2.25
• BRENDA references for 2.4.2.25 (Recommended.)
• PubMed references for 2.4.2.25
• PubMed Central references for 2.4.2.25
• Google Scholar references for 2.4.2.25
• Ortmann R, Sutter A, Grisebach H (1972). "Purification and properties of udpapiose: 7-O-( -D-glucosyl)-flavone apiosyltransferase from cell suspension cultures of parsley". Biochim. Biophys. Acta. 289: 293–302. PMID 4650134. 

[edit] External links

The CAS registry number for this enzyme class is 37332-49-3.

• IUBMB entry for 2.4.2.25

• KEGG entry for 2.4.2.25

• BRENDA entry for 2.4.2.25

• NiceZyme view of 2.4.2.25

• EC2PDB: PDB structures for 2.4.2.25

• PRIAM entry for 2.4.2.25

• PUMA2 entry for 2.4.2.25

• IntEnz: Integrated Enzyme entry for 2.4.2.25

• MetaCyc entry for 2.4.2.25

• Atomic-resolution structures of enzymes belonging to this class

[edit] Gene Ontology (GO) codes

• EGO entry for GO code 0047892: flavone apiosyltransferase

• AMIGO entry for GO code 0047892: flavone apiosyltransferase