Fig. 4.

Insights on the surface of one dimeric MrNVPd. a Sequence-alignment variables between MrNVPd and PvNVPd mapped onto the surface of the P-domain. The hypervariable regions (yellow) from MrNVPd and PvNVPd are presented on the molecular surface and strictly variants residues are colored in yellow as well. b The molecular electrostatic potential surface of the dimeric MrNVPd with the Zn²⁺ ions. A side view of the dimeric MrNVPd is colored in red and blue for negatively and positively charged regions, and the Zn²⁺ ions are shown in yellow spheres. c The side view of the MrNVPd with the Cd²⁺ ions (orange spheres). The ligands of SO₄ and HEPES are colored in yellow and blue, respectively