Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jbiotec.2013.07.029
Title: Computational design of short-chain dehydrogenase Gox2181 for altered coenzyme specificity
Authors: Cui, D.
Zhang, L.
Yao, Z.
Liu, X.
Lin, J.
Yuan, Y.A. 
Wei, D.
Keywords: Altered coenzyme specificity
Computational design
Molecular dynamics simulation
Site-directed mutagenesis
Issue Date: Sep-2013
Source: Cui, D., Zhang, L., Yao, Z., Liu, X., Lin, J., Yuan, Y.A., Wei, D. (2013-09). Computational design of short-chain dehydrogenase Gox2181 for altered coenzyme specificity. Journal of Biotechnology 167 (4) : 386-392. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jbiotec.2013.07.029
Abstract: Short-chain dehydrogenase Gox2181 from Gluconobacter oxydans catalyzes the reduction of 2,3-pentanedione by using NADH as the physiological electron donor. To realize its synthetic biological application for coenzyme recycling use, computational design and site-directed mutagenesis have been used to engineer Gox2181 to utilize not only NADH but also NADPH as the electron donor. Single and double mutations at residues Q20 and D43 were made in a recombinant expression system that corresponded to Gox2181-D43Q and Gox2181-Q20R&D43Q, respectively. The design of mutant Q20R not only resolved the hydrogen bond interaction and electrostatic interaction between R and 2'-phosphate of NADPH, but also could enhance the binding with 2'-phophated of NADPH by combining with D43Q. Molecular dynamics simulation has been carried out to testify the hydrogen bond interactions between mutation sites and 2'-phosphate of NADPH. Steady-state turnover measurement results indicated that Gox2181-D43Q could use both NADH and NADPH as its coenzyme, and so could Gox2181-Q20R&D43Q. Meanwhile, compared to the wild-type enzyme, Gox2181-D43Q exhibited dramatically reduced enzymatic activity while Gox2181-Q20R&D43Q successfully retained the majority of enzymatic activity. © 2013 Elsevier B.V.
Source Title: Journal of Biotechnology
URI: http://scholarbank.nus.edu.sg/handle/10635/100315
ISSN: 01681656
DOI: 10.1016/j.jbiotec.2013.07.029
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

6
checked on Apr 2, 2018

WEB OF SCIENCETM
Citations

4
checked on Apr 2, 2018

Page view(s)

41
checked on Mar 11, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.