An adaptive mutation in adenylate kinase that increases organismal fitness is linked to stability-activity trade-offs.

Abstract excerpt

Protein function is a balance between activity and stability. However, the relevance of stability-activity trade-offs for protein evolution and their impact on organismal fitness have been difficult to determine. Previously, we have linked organismal survival at increasing temperatures to adaptive changes to a single protein sequence through allelic replacement of an essential gene, adenylate kinase (adk), in a...

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