Cellobiose phosphorylase
From Wikipedia the free encyclopedia
| cellobiose phosphorylase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 Cellobiose phosphorylase dimer, Cellulomonas uda | |||||||||
| Identifiers | |||||||||
| EC no. | 2.4.1.20 | ||||||||
| CAS no. | 9030-20-0 | ||||||||
| 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 | ||||||||
| |||||||||
In enzymology, a cellobiose phosphorylase (EC 2.4.1.20) is an enzyme that catalyzes the chemical reaction
- cellobiose + phosphate alpha-D-glucose 1-phosphate + D-glucose
Thus, the two substrates of this enzyme are cellobiose and phosphate, whereas its two products are alpha-D-glucose 1-phosphate and D-glucose.
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is cellobiose:phosphate alpha-D-glucosyltransferase. This enzyme participates in starch and sucrose metabolism.
Structural studies[edit]
As of late 2006, two structures have been solved for this class of enzymes, with PDB accession codes 2CQS and 2CQT.
References[edit]
- Alexander JK (June 1968). "Purification and specificity of cellobiose phosphorylase from Clostridium thermocellum". The Journal of Biological Chemistry. 243 (11): 2899–904. PMID 5653182.
- Ayers WA (November 1959). "Phosphorolysis and synthesis of cellobiose by cell extracts from Ruminococcus flavefaciens". The Journal of Biological Chemistry. 234: 2819–22. PMID 13795349.
