Journal
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC
Volume 72, Issue 3-4, Pages 238-247Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcatb.2011.06.011
Keywords
Quantitative structure-activity relationship (QSAR); Docking simulations; Candida antarctica lipase B (CALB); Enantioselectivity; Quantitative prediction
Funding
- National Hightech R&D Program (863 Program) [2010AA101502]
- China Postdoctoral Science Foundation [20100481411]
- Qianjiang Ren Cai Project [2009R10039]
Ask authors/readers for more resources
Prediction of enzyme enantioselectivity in silico could be of major utility for avoiding the expensive and time-consuming experiments. Herein, we aimed to develop a new approach to construct a quantitative enantioselectivity prediction model with high accuracy for Candida antarctica lipase B (CALB). In the work, Autodock was used to generate substrate conformations for improving the calculation efficiency, followed by the quantitative structure-activity relationship (QSAR) analysis. The effects of acyl donors and 5 molecular interaction fields (steric, electrostatic, hydrophobic, hydrogen bond donor and acceptor fields) on model construction were investigated. The results indicated that the application of actual acyl donors was indispensible for model construction. Inclusion of the relevant molecular interaction fields could significantly improve the predictive accuracy which suggested that enantioselectivity was a consequence of multiple molecular interactions. The final model was derived based on four molecular interaction fields (steric, electrostatic, hydrophobic, hydrogen bond acceptor fields) with actual acyl donors owning higher predictive accuracy (R(pred)(2) = 0.92) than previous report (R(pred)(2) = 0.79). Furthermore, the contour map produced by the model facilitated us to better elucidate the molecular basis of enzyme enantioselectivtiy, and was potential for the application of rational design of the enzyme. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available