6-phospho-beta-galactosidase
A 6-phospho-beta-galactosidase (EC 3.2.1.85) is an enzyme that catalyzes this chemical reaction:
- a 6-phospho-beta-D-galactoside + H2O 6-phospho-D-galactose + an alcohol
| 6-phospho-beta-galactosidase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.2.1.85 | ||||||||
| CAS number | 37237-42-6 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Thus, the two substrates of this enzyme are 6-phospho-beta-D-galactoside and H2O, whereas its two products are 6-phospho-D-galactose and alcohol.
This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is 6-phospho-beta-D-galactoside 6-phosphogalactohydrolase. Other names in common use include phospho-beta-galactosidase, beta-D-phosphogalactoside galactohydrolase, phospho-beta-D-galactosidase, and 6-phospho-beta-D-galactosidase. This enzyme participates in galactose metabolism.
Structural studies
As of 2007, four structures have been solved for this class of enzymes, with PDB accession codes 1PBG, 2PBG, 3PBG, and 4PBG.
References
- Hengstenberg W, Penberthy WK, Morse ML (1970). "Purification of the staphylococcal 6-phospho-beta-D-- galactosidase". Eur. J. Biochem. 14 (1): 27–32. doi:10.1111/j.1432-1033.1970.tb00256.x. PMID 5447434.