Fig. 5

The structure of MMS22L protein sequences.(a) The MMS22L protein domain. The green frame represents the large N-terminal domain of MMS22L, while the brown frame shows its C-terminal portion. The candidate positively selected site is indicated by blue arrow. (b, c) Ribbon representation of Pseudo-atomic models of the MMS22L C-terminal domain in the P. erythrurus and P. putjatia, respectively. From the N-terminus to the C-terminus, it was colored from blue to red in a rainbow way. The zoomed-in picture showed the ball and stick representation of the mutated residues, which located at the loop region. (d, e) Electrostatic potential map of MMS22L C-terminal domain in the P. erythrurus and P. putjatia, respectively. The range of electrostatic surface potential is shown from −7 kT/e (red color) to +7 kT/e (blue color). The local electrostatic potential around the mutated residues was zoomed-in at the bottom panal.