Fig. 1From: Investigation of the structure-activity relationship at the N-terminal part of minigastrin analogsChemical structures of the glycine scan derivatives (blue), the PEG-linked compounds (red), the tetrapeptides lacking an N-methyl group at the norleucine (Nle) moiety (orange) and the tetrapeptides comprising an N-methyl group at the Nle moiety (purple)Back to article page