Biology:Aldose 1-epimerase
| aldose 1-epimerase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 5.1.3.3 | ||||||||
| CAS number | 9031-76-9 | ||||||||
| 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 / QuickGO | ||||||||
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In enzymology, an aldose 1-epimerase (EC 5.1.3.3) is an enzyme that catalyzes the chemical reaction
- alpha-D-glucose [math]\displaystyle{ \rightleftharpoons }[/math] beta-D-glucose
Hence, this enzyme has one substrate, alpha-D-glucose, and one product, beta-D-glucose.
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 aldose 1-epimerase. Other names in common use include mutarotase, and aldose mutarotase. This enzyme participates in glycolysis and gluconeogenesis.
Structural studies
As of late 2007, 23 structures have been solved for this class of enzymes, with PDB accession codes 1L7J, 1L7K, 1LUR, 1MMU, 1MMX, 1MMY, 1MMZ, 1MN0, 1NS0, 1NS2, 1NS4, 1NS7, 1NS8, 1NSM, 1NSR, 1NSS, 1NSU, 1NSV, 1NSX, 1NSZ, 1SNZ, 1SO0, and 1YGA.
References
- Bentley R; Bhate DS (1960). "Mutarotase from Penicillium notatum. I. Purification, assay, and general properties of the enzyme". J. Biol. Chem. 235 (5): 1219–1224. doi:10.1016/S0021-9258(18)69388-3. PMID 13799037. http://www.jbc.org/content/235/5/1219.full.pdf.
- Bentley R; Bhate DS (1960). "Mutarotase from Penicillium notatum. II. The mechanism of the mutarotation reaction". J. Biol. Chem. 235 (5): 1225–1233. doi:10.1016/S0021-9258(18)69389-5. PMID 13799038. http://www.jbc.org/content/235/5/1225.full.pdf.
- "Biological catalysis of mutarotation of glucose". Biochem. J. 50 (3): 341–8. 1952. doi:10.1042/bj0500341. PMID 14915955.
- "A rotographic study of mutarotase". Biochem. J. 57 (1): 50–5. 1954. doi:10.1042/bj0570050. PMID 13159947.
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