Biology:Galacturan 1,4-alpha-galacturonidase
| galacturan 1,4-alpha-galacturonidase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.2.1.67 | ||||||||
| CAS number | 9045-35-6 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
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In enzymology, a galacturan 1,4-alpha-galacturonidase (EC 3.2.1.67) is an enzyme that catalyzes the chemical reaction
- (1,4-alpha-D-galacturonide)n + H2O [math]\displaystyle{ \rightleftharpoons }[/math] (1,4-alpha-D-galacturonide)n-1 + D-galacturonate
Thus, the two substrates of this enzyme are (1,4-alpha-D-galacturonide)n and H2O, whereas its two products are (1,4-alpha-D-galacturonide)n-1 and D-galacturonate.
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 poly(1,4-alpha-D-galacturonide) galacturonohydrolase. Other names in common use include exopolygalacturonase, poly(galacturonate) hydrolase, exo-D-galacturonase, exo-D-galacturonanase, and exopoly-D-galacturonase. This enzyme participates in pentose and glucuronate interconversions and starch and sucrose metabolism.
References
- "Isolation of an oligogalacturonate hydrolase from a Bacillus specie". Arch. Biochem. Biophys. 124 (1): 513–20. 1968. doi:10.1016/0003-9861(68)90360-3. PMID 5661621.
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