Pervasive Cryptic Epistasis in Molecular Evolution
نویسندگان
چکیده
منابع مشابه
Pervasive Cryptic Epistasis in Molecular Evolution
The functional effects of most amino acid replacements accumulated during molecular evolution are unknown, because most are not observed naturally and the possible combinations are too numerous. We created 168 single mutations in wild-type Escherichia coli isopropymalate dehydrogenase (IMDH) that match the differences found in wild-type Pseudomonas aeruginosa IMDH. 104 mutant enzymes performed ...
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The accumulation of deleterious mutations plays a major role in evolution, and key to this are the interactions between their fitness effects, known as epistasis. Whether mutations tend to interact synergistically (with multiple mutations being more deleterious than would be expected from their individual fitness effects) or antagonistically is important for a variety of evolutionary questions,...
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ژورنال
عنوان ژورنال: PLoS Genetics
سال: 2010
ISSN: 1553-7404
DOI: 10.1371/journal.pgen.1001162