Figure 3.

The (E+K)/(Q+H) values for chaperonins (3A) and ligases (3B) versus the (E+K)/(Q+H) values for the proteomes of HT, T and M. The (E+K)/(Q+H) ratios for the chaperonins and for the DNA ligases, described in Material and Methods, were calculated in each one of the 28 organisms. In mesophilic prokaryotes the ratios for chaperonins followed the hyperthermophilic values (> 2.5), except for Vibrio cholarae (Vc) and Halobacterium sp (Hal). In mesophilic eukaryotes, only Homo sapiens (Hs) and Drosophila melanogaster (Dm) followed the rule. The ratios for DNA ligases always followed the proteome values.