| 英文名 |
xyloglucan-specific exo-beta-1,4-glucanase |
| Example Structure |
 |
| 别名 |
Cel74A, XEG74, XG, xyloglucanase, xyloglucanase Xgh74A |
| EC Number |
3.2.1.155 |
| CAS编号 |
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| Comments |
The enzyme removes XXXG heptasaccharides, XXLG/XLXG octasaccharides and XLLG nonasaccharides from the end of tamarind seed xyloglucan polymers in a processive manner. Hydrolysis occurs at the unsubstituted?D-glucopyranose residue in the main backbone. It is not known whether the cleavage takes place at the reducing or non-reducing end of the polymer. Very low activity with ¦Â-D-glucans. The enzyme from?Chrysosporium lucknowense?shifts to an endoglucanase mode when acting on linear substrates without bulky substituents on the polymeric backbone such as barley ¦Â-glucan. Formerly EC?3.2.1.160. |
| Cofactor |
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| History |
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| Reactions |
Hydrolysis of (1->4)-D-glucosidic linkages in xyloglucans so as to successively remove oligosaccharides from the chain end |
