Polygalacturonate 4-alpha-galacturonosyltransferase
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In enzymology, a polygalacturonate 4-alpha-galacturonosyltransferase (EC 2.4.1.43) is an enzyme that catalyzes the chemical reaction
- UDP-D-galacturonate + (1,4-alpha-D-galacturonosyl)n
UDP + (1,4-alpha-D-galacturonosyl)n+1
Thus, the two substrates of this enzyme are UDP-D-galacturonate and (1,4-alpha-D-galacturonosyl)n, whereas its two products are UDP and (1,4-alpha-D-galacturonosyl)n+1.
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-D-galacturonate:1,4-alpha-poly-D-galacturonate 4-alpha-D-galacturonosyltransferase. Other names in common use include UDP galacturonate-polygalacturonate alpha-galacturonosyltransferase, uridine diphosphogalacturonate-polygalacturonate, and alpha-galacturonosyltransferase. This enzyme participates in starch and sucrose metabolism and nucleotide sugars metabolism.
[edit] References
- IUBMB entry for 2.4.1.43
- BRENDA references for 2.4.1.43 (Recommended.)
- PubMed references for 2.4.1.43
- PubMed Central references for 2.4.1.43
- Google Scholar references for 2.4.1.43
- Villemez CL, Swanson AL, Hassid WZ (1966). "Properties of a polygalacturonic acid-synthesizing enzyme system from Phaseolus aureus seedlings". Arch. Biochem. Biophys. 116: 446–52. PMID 5961848.
[edit] External links
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- The CAS registry number for this enzyme class is 37277-53-5.
[edit] Gene Ontology (GO) codes
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