Robust design and optimization of retroaldol enzymes.
Robust design and optimization of retroaldol enzymes.
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DOI:
10.1002/pro.2059
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发表时间:
2012-05
期刊:
影响因子:
8
通讯作者:
Baker, David
中科院分区:
文献类型:
--
作者:
Althoff, Eric A.;Wang, Ling;Jiang, Lin;Giger, Lars;Lassila, Jonathan K.;Wang, Zhizhi;Smith, Matthew;Hari, Sanjay;Kast, Peter;Herschlag, Daniel;Hilvert, Donald;Baker, David
关键词:
Enzyme catalysts of a retro-aldol reaction have been generated by computational design using a motif that combines a lysine in a non-polar environment with water-mediated stabilization of the carbinolamine hydroxyl and β-hydroxyl groups. Here we show that the design process is robust and repeatable, with 33 new active designs constructed on 13 different protein scaffold backbones. The initial activities are not high but are increased through site-directed mutagenesis and laboratory evolution. Mutational data highlight areas for improvement in design. Different designed catalysts give different borohydride-reduced reaction intermediates, suggesting a distribution of properties of the designed enzymes that may be further explored and exploited.
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