Ribulose-phosphate 3-epimerase
- Ribulose-phosphate 3-epimerase
In enzymology, a ribulose-phosphate 3-epimerase (EC number|5.1.3.1) is an enzyme that catalyzes the chemical reaction
:D-ribulose 5-phosphate D-xylulose 5-phosphate
Hence, this enzyme has one substrate, D-ribulose 5-phosphate, and one product, D-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 D-ribulose-5-phosphate 3-epimerase. Other names in common use include phosphoribulose epimerase, erythrose-4-phosphate isomerase, phosphoketopentose 3-epimerase, xylulose phosphate 3-epimerase, phosphoketopentose epimerase, ribulose 5-phosphate 3-epimerase, D-ribulose phosphate-3-epimerase, D-ribulose 5-phosphate epimerase, D-ribulose-5-P 3-epimerase, D-xylulose-5-phosphate 3-epimerase, and pentose-5-phosphate 3-epimerase. This enzyme participates in 3 metabolic pathways: pentose phosphate pathway, pentose and glucuronate interconversions, and carbon fixation.
tructural studies
As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes PDB link|1H1Y, PDB link|1H1Z, PDB link|1RPX, and PDB link|1TQJ.
References
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External links
::"The CAS registry number for this enzyme class is CAS registry|9024-20-8."
Gene Ontology (GO) codes
Wikimedia Foundation.
2010.
Look at other dictionaries:
ribulose-phosphate 3-epimerase — An enzyme catalyzing the reversible interconversion of d xylulose 5 phosphate and its epimer, d ribulose 5 phosphate; a step in the nonoxidative phase of the pentose phosphate pathway. SYN: phosphoribulose epimerase. * * * ri·bu·lose phos·phate 3 … Medical dictionary
L-ribulose-5-phosphate 4-epimerase — In enzymology, a L ribulose 5 phosphate 4 epimerase (EC number|5.1.3.4) is an enzyme that catalyzes the chemical reaction:L ribulose 5 phosphate ightleftharpoons D xylulose 5 phosphateHence, this enzyme has one substrate, L ribulose 5 phosphate,… … Wikipedia
L-ribulose-5-phosphate 3-epimerase — In enzymology, a L ribulose 5 phosphate 3 epimerase (EC number|5.1.3.22) is an enzyme that catalyzes the chemical reaction:L ribulose 5 phosphate ightleftharpoons L xylulose 5 phosphateHence, this enzyme has one substrate, L ribulose 5 phosphate … Wikipedia
Ribulose-5-phosphate — Général Nom IUPAC (2R,3R) 2,3,5 trihydroxy 4 oxopentyl dihydrogéno phosphate … Wikipédia en Français
phosphoribulose epimerase — SYN: ribulose phosphate 3 epimerase … Medical dictionary
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Ribulosephosphat-3-Epimerase — Masse/Länge Primärstruktur 228 Aminosäuren … Deutsch Wikipedia
Phosphopentose epimerase — is an enzyme which intraconverts ribulose 5 phosphate and xylulose 5 phosphate.It plays a role in the Calvin cycle and the pentose phosphate pathway.External links* [http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=stryer.figgrp.2802 Diagram at… … Wikipedia
phosphopentose epimerase — An enzyme that catalyzes the reversible epimerization of a number of phosphorylated, five carbon sugars; most notably ribulose 5 phosphate to xylulose 5 phosphate in the pentose phosphate pathway … Medical dictionary
List of EC numbers (EC 5) — This list contains a list of EC numbers for the fifth group, EC 5, isomerases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology. =EC 5.1: Epimerases and… … Wikipedia