L-ribulose-5-phosphate 3-epimerase

L-ribulose-5-phosphate 3-epimerase
Identifiers
EC no.	5.1.3.22
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

In enzymology, a L-ribulose-5-phosphate 3-epimerase (EC 5.1.3.22) is an enzyme that catalyzes the chemical reaction

L-ribulose 5-phosphate ${\displaystyle \rightleftharpoons }$ L-xylulose 5-phosphate

Hence, this enzyme has one substrate, L-ribulose 5-phosphate, and one product, L-xylulose 5-phosphate.

This enzyme belongs to the family of isomerases, specifically those racemases and epimerases acting on carbohydrates and derivatives. The systematic name of this enzyme class is L-ribulose-5-phosphate 3-epimerase. Other names in common use include L-xylulose 5-phosphate 3-epimerase, UlaE, and SgaU. This enzyme participates in ascorbate and aldarate metabolism.

References

• Yew WS, Gerlt JA (2002). "Utilization of L-ascorbate by Escherichia coli K-12: assignments of functions to products of the yjf-sga and yia-sgb operons". J. Bacteriol. 184 (1): 302–6. doi:10.1128/JB.184.1.302-306.2002. PMC 134747. PMID 11741871.