Additional file 5.

Absence/presence of polymorphic amino acid variable bonds with sidechains of nearby invariant amino acids in Colias PEPCK. Abbreviations: H bond, hydrogen bond; Ǻ, Ǻngstrom unit of length; vdW, van der Waals; marg, marginal. Alleles identified by one-letter amino acid codes at each of the three polymorphic sites shared between species. Invariant amino acid sites bonding to variable amino acids are identified by number prior to bond length in Ǻ. 272-503 H bonds engage the backbone carbonyl of amino acid 503. All bond types, including distance criteria for marginal or absent van der Waals contacts, are discussed in the main text and many are illustrated in Figures 6, 7, 8.

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Watt et al. BMC Evolutionary Biology 2013 13:9   doi:10.1186/1471-2148-13-9