Amylosucrase

amylosucrase
Identifiers
EC number 2.4.1.4
CAS number 9032-11-5
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 / EGO

In enzymology, an amylosucrase (EC 2.4.1.4) is an enzyme that catalyzes the chemical reaction

sucrose + (1,4-alpha-D-glucosyl)n D-fructose + (1,4-alpha-D-glucosyl)n+1

Thus, the two substrates of this enzyme are sucrose and (1,4-alpha-D-glucosyl)n, whereas its two products are D-fructose and (1,4-alpha-D-glucosyl)n+1.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is sucrose:1,4-alpha-D-glucan 4-alpha-D-glucosyltransferase. Other names in common use include sucrose-glucan glucosyltransferase, and sucrose-1,4-alpha-glucan glucosyltransferase. This enzyme participates in starch and sucrose metabolism.

Structural studies

As of late 2007, 10 structures have been solved for this class of enzymes, with PDB accession codes 1G5A, 1JG9, 1JGI, 1MVY, 1MW0, 1MW1, 1MW2, 1MW3, 1S46, and 1ZS2.

References


    This article is issued from Wikipedia - version of the 8/10/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.