Interaction of Cu(II) and Ni(II) with Ypk9 Protein Fragment via NMR Studies
Figure 5
3D structural model for the Cu(II) ion complexed with PK9-H peptide in a distorted tetragonal geometry, with the involvement of the imidazole nitrogen of the histidine residue, and three deprotonated amidic nitrogens from the peptide backbone (belonging to His-5, Lys-4, and Glu-3 residues), giving a species.
