4-hydroxybenzoate 4-O-beta-D-glucosyltransferase

4-hydroxybenzoate 4-O-beta-D-glucosyltransferase
Identifiers
EC number	2.4.1.194
CAS number	120860-68-6
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 4-hydroxybenzoate 4-O-beta-D-glucosyltransferase (EC 2.4.1.194) is an enzyme that catalyzes the chemical reaction

UDP-glucose + 4-hydroxybenzoate $\rightleftharpoons$ UDP + 4-(beta-D-glucosyloxy)benzoate

Thus, the two substrates of this enzyme are UDP-glucose and 4-hydroxybenzoate, whereas its two products are UDP and 4-(beta-D-glucosyloxy)benzoate.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:4-hydroxybenzoate 4-O-beta-D-glucosyltransferase. Other names in common use include uridine diphosphoglucose-4-hydroxybenzoate glucosyltransferase, UDP-glucose:4-(beta-D-glucopyranosyloxy)benzoic acid, glucosyltransferase, HBA glucosyltransferase, p-hydroxybenzoate glucosyltransferase, PHB glucosyltransferase, and PHB-O-glucosyltransferase.

References

• Katsumata T, Shige H and Ejiri S-I (1989). "Biochemical-studies on pollen. 34. UDP glucose-4-(beta-D-glucopyranosyloxy) benzoic-acid glucosyltransferase from the pollen of Pinus densiflora". Phytochemistry 28 (2): 359–362. doi:10.1016/0031-9422(89)80013-5.