The Role of Methylation in the Copper(Ii) Coordination Properties of a His-Containing Decapeptide Electronic Supplementary Information (Esi) Available: Species Distribution Diagrams for the O-Nme-Asp Peptide and for the Copper(Ii) Complexes Overlay with Cd Data, Cd Spectroscopic Ph Titrations and Copper(Ii) Titrations, Epr Spectra of Copper(Ii) Complexes at Ph 8.3, Additional Nmr Spectra and Graphic of the Variation of the Anodic and Cathodic Peak Currents of [Cuh(O-Nme-Asp)](2+) with the Square Root of the Scan Rate. Tables of Epr Parameters for the Copper(Ii) Complexes at Different Ph Values, and of the Anodic and Cathodic Potential Values and Respective Peak Currents of the [Cuh(O-Nme-Asp)](2+) Complex at Different Scan Rates. See Doi:; 10.1039/C8Dt05037F