Modulating the thermostability of Endoglucanase I from Trichoderma reesei using computational approaches

Protein Engineering, Design & Selection : PEDS
Gunseli Bayram AkcapinarUgur O Sezerman

Abstract

In the last decades, effective cellulose degradation became a major point of interest due to the properties of cellulose as a renewable energy source and the widespread application of cellulases (the cellulose degrading enzymes) in many industrial processes. Effective bioconversion of lignocellulosic biomass into soluble sugars for ethanol production requires use of thermostable and highly active cellulases. The library of current cellulases includes enzymes that can work at acidic and neutral pH in a wide temperature range. However, only few cellulases are reported to be thermostable. In order to alleviate this, we have performed a hybrid approach for the thermostabilization of a key cellulase, Endoglucanase I (EGI) from Trichoderma reesei. We combined in silico and in vitro experiments to modulate the thermostability of EGI. Four different predictive algorithms were used to set up a library of mutations. Three thermostabilizer mutations (Q126F, K272F, Q274V) were selected and molecular dynamics simulations at room temperature and high temperatures were performed to analyze the effect of the mutations on enzyme structure and stability. The mutations were then introduced into the endoglucanase 1 gene, using site-directed mutage...Continue Reading

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Citations

Oct 27, 2015·Bioprocess and Biosystems Engineering·Burcu Gündüz Ergün, Pınar Çalık
Oct 31, 2015·Applied Biochemistry and Biotechnology·Fucheng ZhuBingfang He
May 1, 2016·Protein Engineering, Design & Selection : PEDS·Asli Yenenler, Osman Ugur Sezerman
Feb 2, 2017·Journal of Chemical Information and Modeling·Xukai JiangLushan Wang
Dec 16, 2018·Applied and Environmental Microbiology·Fei ZhengHuiying Luo
Mar 1, 2020·International Journal of Molecular Sciences·Francisca ContrerasMehdi D Davari
Aug 11, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Lucas Ferreira RibeiroMaría-Eugenia Guazzaroni
Sep 17, 2017·The Journal of Chemical Physics·Mateusz ChwastykMarek Cieplak

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