Figure 6.

MEPE isoelectric points (pI) calculated for the 26 mammalian and 3 avian species. The red shadow represents the acid pI while the blue the basic pI, the grey shadow shows the nearly neutral proteins, from 6.5 to 7.5.

Machado et al. BMC Evolutionary Biology 2011 11:342   doi:10.1186/1471-2148-11-342
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