饱和突变
突变
蛋白质工程
热稳定性
定点突变
定向进化
计算生物学
氨基酸残基
蛋白质设计
定向诱变
酶
生物
生物化学
突变
蛋白质结构
肽序列
突变体
基因
作者
Rodrigo M.P. Siloto,Randall J. Weselake
标识
DOI:10.1016/j.bcab.2012.03.010
摘要
Mutagenesis strategies have been applied to fine-tune different enzyme properties including substrate specificity, thermostability, enantioselectivity or simply to increase activity. The mechanistic understanding of how a particular enzyme operates often dictates suitable mutagenesis strategies. Site saturation mutagenesis is used to substitute targeted residues to any other naturally occurring amino acid. Here, we review several aspects of this mutagenesis approach, comparing different molecular techniques to produce libraries of single-residue substitutions. A discussion of experimental design and combinatorial mutagenesis in light of screening capabilities is provided. Several examples of this mutagenesis strategy applied to directed evolution and structure–function studies are also discussed.
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