Article
Systematic variation of amino acid substitutions for stringent assessment of pairwise covariation.
Journal of molecular biology - 16 May 2003
Govindarajan Sridhar, Ness Jon E, Kim Seran, Mundorff Emily C, Minshull Jeremy, Gustafsson Claes
Abstract excerpt
During protein evolution, amino acids change due to a combination of functional constraints and genetic drift. Proteins frequently contain pairs of amino acids that appear to change together (covariation). Analysis of covariation from naturally occurring sets of orthologs cannot distinguish between residue pairs retained by functional requirements of the protein and those pairs existing due to changes along a...
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