Reference: Toda H, et al. (2005) Gene cloning of an endoglucanase from the basidiomycete Irpex lacteus and its cDNA expression in Saccharomyces cerevisiae. Biosci Biotechnol Biochem 69(7):1262-9

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Abstract


A gene (cen1) coding for an endoglucanase I (En-1) was isolated from white rot fungus Irpex lacteus strain MC-2. The cen1 ORF was comprised of 399 amino acid residues and interrupted by 14 introns. The deduced amino acid sequence of the cen1 ORF revealed a multi-domain structure composed of a cellulose-binding domain, a Ser-/Thr-rich linker, and a catalytic domain from the N-terminus. It showed a significant similarity to those of other endoglucanases that belong to family 5 of glycosyl hydrolases. cen1 cDNA was inserted into a yeast expression vector, YEpFLAG-1, and introduced into Saccharomyces cerevesiae. The resulting S. cerevisiae transformant secreted a recombinant En-1 that had enzymatic properties similar to the original En-1. A strong synergistic effect for a degradation of Avicel and phosphoric acid swollen cellulose was observed when recombinant En-1 was used together with a major exo-type cellobiohydrolase I of I. lacteus MC-2.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Toda H, Takada S, Oda M, Amano Y, Kanda T, Okazaki M, Shimosaka M
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