Non-aqueous homogenous biocatalytic conversion of polysaccharides in ionic liquids using chemically modified glucosidase

被引:92
作者
Brogan, Alex P. S. [1 ]
Bui-Le, Liem [1 ]
Hallett, Jason P. [1 ]
机构
[1] Imperial Coll London, Dept Chem Engn, Exhibit Rd, London, England
基金
英国工程与自然科学研究理事会;
关键词
CIRCULAR-DICHROISM SPECTROSCOPY; SECONDARY STRUCTURE ANALYSES; ORGANIC-SOLVENTS; BIOMASS; ENZYMES; DECONSTRUCTION; NANOCONSTRUCTS; MYOGLOBIN; BIOFUELS; WATER;
D O I
10.1038/s41557-018-0088-6
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The increasing requirement to produce platform chemicals and fuels from renewable sources means advances in biocatalysis are rapidly becoming a necessity. Biomass is widely used in nature as a source of energy and as chemical building blocks. However, recalcitrance towards traditional chemical processes and solvents provides a significant barrier to widespread utility. Here, by optimizing enzyme solubility in ionic liquids, we have discovered solvent-induced substrate promiscuity of glucosidase, demonstrating an unprecedented example of homogeneous enzyme bioprocessing of cellulose. Specifically, chemical modification of glucosidase for solubilization in ionic liquids can increase thermal stability to up to 137 degrees C, allowing for enzymatic activity 30 times greater than is possible in aqueous media. These results establish that through a synergistic combination of chemical biology (enzyme modification) and reaction engineering (solvent choice), the biocatalytic capability of enzymes can be intensified: a key step towards the full-scale deployment of industrial biocatalysis.
引用
收藏
页码:859 / 865
页数:7
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