Stability effects of mutations and protein evolvability.
The past several years have seen novel insights at the interface of protein biophysics and evolution. The accepted paradigm that proteins can tolerate nearly any amino acid substitution has been replaced by the view that the deleterious effects of mutations, and especially their tendency to undermine the thermodynamic and kinetic stability of protein, is a major constraint on protein evolvability--the ability of proteins to acquire changes in sequence and function. We summarize recent findings regarding how mutations affect protein stability, and how stability affects protein evolution. We describe ways of predicting and analyzing stability effects of mutations, and mechanisms that buffer or compensate for these destabilizing effects and thereby promote protein evolvabilty, in nature and in the laboratory.
Tokuriki
Nobuhiko
N
Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
Tawfik
Dan S
DS
D019143:Evolution, Molecular; D006801:Humans; D009154:Mutation; D011487:Protein Conformation; D055550:Protein Stability; D011506:Proteins / Q000737:chemistry* / Q000235:genetics*; D013816:Thermodynamics
D011506:Proteins