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The Structurally Constrained Protein Evolution (SCPE) model simulates protein evolution by introducing random mutations into the evolving sequences and selecting them against too much structural perturbation. Given a single protein structure, the SCPE model can be used to obtain a whole set of site-dependent amino acid substitution matrices. The set of SCPE substitution matrices for a given protein...
Recent large-scale studies of evolutionary changes in gene expression among mammalian species have led to the proposal that gene expression divergence may be neutral with respect to organismic fitness. Here, we employ a comparative analysis of mammalian gene sequence divergence and gene expression divergence to test the hypothesis that the evolution of gene expression is predominantly neutral. Two...
Evolutionary rates are not uniformly distributed across the genome. Knowledge about the biological causes of this observation is still incomplete, but its exploration has provided valuable insight into the genomical, historical and demographical variables that influence rates of genetic divergence. Recent studies suggest a possible association between chromosomal rearrangements and regions of greater...
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