期刊
TRENDS IN BIOCHEMICAL SCIENCES
卷 34, 期 2, 页码 53-59出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2008.10.009
关键词
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资金
- EU-BioModuIarH2
- Israel Science foundation
- Wolgin Prize for Scientific Excellence
- Norwegian Research Council, Functional Genomics (FUGE)
Natural selection shapes the sequence, structure and biophysical properties of proteins to fit their environment. We hypothesize that highly thermostable proteins and viral proteins represent two opposing adaptation strategies. Thermostable proteins are highly compact and possess well-packed hydrophobic cores and intensely charged surfaces. By contrast, viral proteins, and RNA viral proteins in particular, display a high occurrence of disordered segments and loosely packed cores. These features might endow viral proteins with increased structural flexibility and effective ways to interact with the components of the host. They could also be related to high adaptability levels and mutation rates observed in viruses, thus, representing a unique strategy for buffering the deleterious effects of mutations, such that those that have little (interactions), have little to lose.
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