highly significantp < 7.2 x 10 −22
Consistent with this hypothesis, there was a moderately strong, but highly significant, correlation (Spearman rank correlation = 0.47, p < 7.2 x 10 −22 , S5 Fig ) between the ConSurf score for a residue and the median yeast assay score for substitutions at that site, with more conserved residues displaying lower median growth.