Figure 4.

Distribution of coevolving sites amongst secondary structures in GroEL. The observed number of sites within each structure (colour coded bars according to the bacterial group) was compared to the expected number of such sites using a χ2 distribution. Significant values (P < 0.05) are indicated with black stars.

Ruiz-González and Fares BMC Evolutionary Biology 2013 13:156   doi:10.1186/1471-2148-13-156
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