In enzymology, a xyloglucan:xyloglucosyl transferase (EC 2.4.1.207) is an enzyme that catalyzes the chemical reaction in which a beta-(1,4) bond in the backbone of a xyloglucan in broken; the xyloglucanyl segment is then transferred to the O4 of the non-reducing terminal glucose residue of either xyloglucan or an oligosaccharide thereof.[1]
| xyloglucan:xyloglucosyl transferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.4.1.207 | ||||||||
| 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 | ||||||||
| |||||||||
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is xyloglucan:xyloglucan xyloglucanotransferase. Other names in common use include endo-xyloglucan transferase, and xyloglucan endotransglycosylase.
Structural studies edit
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 1UMZ and 1UN1.
References edit
- ^ Thompson, James E.; Fry, Stephen C. (2001). "Restructuring of wall-bound xyloglucan by transglycosylation in living plant cells" (PDF). The Plant Journal. 26 (1): 23–34. doi:10.1046/j.1365-313x.2001.01005.x. PMID 11359607.
- Fry SC, Smith RC, Renwick KF, Martin DJ, Hodge SK, Matthews KJ (1992). "Xyloglucan endotransglycosylase, a new wall-loosening enzyme activity from plants". Biochem. J. 282 (Pt 3): 821–8. doi:10.1042/bj2820821. PMC 1130861. PMID 1554366.
- Nishitani K, Tominaga R (1992). "Endo-xyloglucan transferase, a novel class of glycosyltransferase that catalyzes transfer of a segment of xyloglucan molecule to another xyloglucan molecule". J. Biol. Chem. 267 (29): 21058–64. PMID 1400418.
- Foucher AL, McIntosh A, Douce G, Wastling J, Tait A, Turner CM (2006). "A proteomic analysis of arsenical drug resistance in Trypanosoma brucei". Proteomics. 6 (9): 2726–32. doi:10.1002/pmic.200500419. PMID 16526094. S2CID 24074942.
- Lorences EP, Fry, SC (1993). "Xyloglucan oligosaccharides with at least two alpha-D-xylose residues act as acceptor substrates for xyloglucan endotransglycosylase and promote the depolymerisation of xyloglucan". Plant Physiol. 88: 105–112. doi:10.1111/j.1399-3054.1993.tb01767.x.
