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FEMS Microbiol Lett. 2004 Jul 1;236(1):123-8.

Partial purification and biochemical characterization of a soluble alpha-glucosidase II-like activity from Candida albicans.

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Instituto de Investigación en Biología Experimental, Facultad de Química, Universidad Autonoma de Guanajuato, Guanajuato, Guanajuato CP 36000, México.

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  • FEMS Microbiol Lett. 2005 Oct 15;251(2):355.


A soluble alpha-glucosidase was partially purified from Candida albicans cells by a three-step procedure consisting of size-exclusion, ion-exchange and adsorption chromatographies. After the last step, enzyme was enriched about 8.7-fold with a yield of 13% over the starting material and analysis of the purified preparation revealed two major polypeptides of 36 and 47 kDa. The latter was responsible for enzyme activity as visualized with a fluorescent substrate. Nigerose, an alpha-1,3-linked glucose disaccharide, was preferentially hydrolyzed by the purified enzyme over other glucosedisaccharides bearing distinct alpha-linkages. The purified alpha-glucosidase also converted the GlcMan9GlcNAc2 oligosaccharide into the Man9GlcNAc2 product in a time-dependent manner. These and other determined properties are consistent with a type GII alpha-glucosidase probably involved in N-glycan processing.

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