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. Author manuscript; available in PMC: 2009 Aug 26.
Published in final edited form as: Int J Pept Res Ther. 2008 Dec;14(4):293–300. doi: 10.1007/s10989-008-9150-3

Fig. 1.

Fig. 1

List of heterobivalent constructs composed of melanocortin and cholecystokinin ligands (MSH-7 and CCK-6, respectively). The heterobivalent ligands were either constructed from the semi-rigid poly(Pro-Gly) linker (compound 1–5) or from the flexible PEGO linker (compound 6–7). The legend shows the peptide sequences of MSH-7 and CCK-6 ligands and the structure of the PEGO linker (20 atoms)