| 英文名 |
cycloisomaltooligosaccharide glucanotransferase |
| Example Structure |
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| 别名 |
CITase, CITase-598K, CITase-T3040, isocyclomaltooligosaccharide glucanotransferase |
| EC Number |
2.4.1.248 |
| CAS编号 |
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| Comments |
Specific for (1¡ú6)-¦Á-D-glucans (dextrans) and, unlike cyclomaltodextrin glucanotransferase (EC 2.4.1.19), without activity towards (1¡ú4)-¦Á-D-glucans, such as amylose. It also has no activity on oligosaccharides, such as amylopectin and pullulan, containing (1¡ú6)-¦Á-D-glucosidic linkages at branch points. The enzyme from Bacillus circulans T-3040 has been shown to form cycloisomalto-oligosaccharides of three sizes (7, 8 and 9 glucose units). It will also catalyse the disproportionation of two isomalto-oligosaccharides molecules to yield a series of isomalto-oligosachharides and the addition of D-glucose to cycloisomalto-oligosaccharides with ring opening to form isomalto-oligosaccharides. |
| Cofactor |
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| History |
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| Reactions |
Cyclizes part of a (1->6)-alpha-D-glucan chain by formation of a (1->6)- alpha-D-glucosidic bond. |
