Structural highlights
Function[CTA1_BACCI] Produces cycloisomaltooligosaccharide from dextran containing 7, 8 or 9 glucose units. The enzyme is specific for (1->6)-alpha-D-glucans (dextrans) and, without activity toward (1->4)-alpha-D-glucans, such as amylose. It also has no activity on oligosaccharides, such as amylopectin and pullulan, containing (1->6)-alpha-D-glucosidic linkages at branch points.[1] Publication Abstract from PubMedBacillus circulans T-3040 cycloisomaltooligosaccharide glucanotransferase (BcCITase) catalyses an intramolecular transglucosylation reaction and produces cycloisomaltooligosaccharides from dextran. BcCITase was overexpressed in Escherichia coli in two different forms and crystallized by the sitting-drop vapour-diffusion method. The crystal of BcCITase bearing an N-terminal His(6) tag diffracted to a resolution of 2.3 A and belonged to space group P3(1)21, containing a single molecule in the asymmetric unit. The crystal of BcCITase bearing a C-terminal His6 tag diffracted to a resolution of 1.9 A and belonged to space group P2(1)2(1)2(1), containing two molecules in the asymmetric unit. Crystallization and preliminary X-ray crystallographic analysis of cycloisomaltooligosaccharide glucanotransferase from Bacillus circulans T-3040.,Suzuki N, Kim YM, Momma M, Fujimoto Z, Kobayashi M, Kimura A, Funane K Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Aug;69(Pt 8):946-9. doi:, 10.1107/S174430911301991X. Epub 2013 Jul 27. PMID:23908050[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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This page was last modified 14:17, 25 December 2014.