Biology:Xyloglucan-specific endo-beta-1,4-glucanase
| Xyloglucan-specific endo-beta-1,4-glucanase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.2.1.151 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
In enzymology, a xyloglucan-specific endo-beta-1,4-glucanase (EC 3.2.1.151) is an enzyme that catalyzes the chemical reaction
- xyloglucan + H2O [math]\displaystyle{ \rightleftharpoons }[/math] xyloglucan oligosaccharides
Thus, the two substrates of this enzyme are xyloglucan and H2O, whereas its product is xyloglucan oligosaccharides.
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 [(1->6)-alpha-D-xylo]-(1->4)-beta-D-glucan glucanohydrolase. Other names in common use include XEG, xyloglucan endo-beta-1,4-glucanase, xyloglucanase, xyloglucanendohydrolase, XH, and 1,4-beta-D-glucan glucanohydrolase.
Family 12 was first identified in plant pathogens by discovery in Phytophthora spp.
Structural studies
As of late 2007, 15 structures have been solved for this class of enzymes, with PDB accession codes 2CN2, 2CN3, 2E0P, 2E4T, 2EEX, 2EJ1, 2EO7, 2EQD, 2JEM, 2JEN, 2JEP, 2JEQ, 2UWA, 2UWB, and 2UWC.
References
Further reading
- "A xyloglucan-specific endo-beta-1,4-glucanase from Aspergillus aculeatus: expression cloning in yeast, purification and characterization of the recombinant enzyme". Glycobiology 9 (1): 93–100. January 1999. doi:10.1093/glycob/9.1.93. PMID 9884411.
- "Specific xyloglucanases as a new class of polysaccharide-degrading enzymes". Biochimica et Biophysica Acta (BBA) - General Subjects 1674 (3): 268–81. November 2004. doi:10.1016/j.bbagen.2004.07.001. PMID 15541296.
- "Gene duplication event in family 12 glycosyl hydrolase from Phytophthora spp". Fungal Genetics and Biology 43 (10): 707–14. October 2006. doi:10.1016/j.fgb.2006.04.006. PMID 16784880.
 |  |
