Cloning, purification, crystallization and preliminary X-ray studies of a carbohydrate-binding module (CBM_E1) derived from sugarcane soil metagenome.
Acta crystallographica. Section F, Structural biology communications(2014)
摘要
In recent years, owing to the growing global demand for energy, dependence on fossil fuels, limited natural resources and environmental pollution, biofuels have attracted great interest as a source of renewable energy. However, the production of biofuels from plant biomass is still considered to be an expensive technology. In this context, the study of carbohydrate-binding modules (CBMs), which are involved in guiding the catalytic domains of glycoside hydrolases for polysaccharide degradation, is attracting growing attention. Aiming at the identification of new CBMs, a sugarcane soil metagenomic library was analyzed and an uncharacterized CBM (CBM_E1) was identified. In this study, CBM_E1 was expressed, purified and crystallized. X-ray diffraction data were collected to 1.95 Å resolution. The crystals, which were obtained by the sitting-drop vapour-diffusion method, belonged to space group I23, with unit-cell parameters a = b = c = 88.07 Å.
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关键词
gh5,accessory domain,biofuels,carbohydrate-binding module,glycoside hydrolases,renewable energy
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