1,4-beta-D-xylan synthase

1,4-beta-D-xylan synthase
Identifiers
EC number	2.4.2.24
CAS number	37277-73-9
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
Search PMC articles PubMed articles NCBI proteins

In enzymology, a 1,4-beta-D-xylan synthase (EC 2.4.2.24) is an enzyme that catalyzes the chemical reaction

UDP-D-xylose + (1,4-beta-D-xylan)n $\rightleftharpoons$ UDP + (1,4-beta-D-xylan)n⁺1

Thus, the two substrates of this enzyme are UDP-D-xylose and (1,4-beta-D-xylan)n, whereas its two products are UDP and (1,4-beta-D-xylan)n+1.

This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is UDP-D-xylose:1,4-beta-D-xylan 4-beta-D-xylosyltransferase. Other names in common use include uridine diphosphoxylose-1,4-beta-xylan xylosyltransferase, 1,4-beta-xylan synthase, xylan synthase, and xylan synthetase. This enzyme participates in starch and sucrose metabolism and nucleotide sugars metabolism.

References

• Bailey RW and Hassid WZ (1966). "Xylan synthesis from uridine-diphosphate-D-xylose by particulate preparations from immature corncobs". Proc. Natl. Acad. Sci. USA 56 (5): 1586–1593. doi:10.1073/pnas.56.5.1586. PMC 220039. PMID 16591393.