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Peptides. 2000 Feb;21(2):239-43.

New highly specific agonistic peptides for human melanocortin MC(1) receptor.

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Department of Pharmaceutical Pharmacology, Uppsala University, SE-751 24, Uppsala, Sweden.


A peptide with very high specificity for the human melanocortin MC(1) receptor identified by phage display was used as a lead for the design of new peptides. Two new peptides, MS05 and MS09, were synthesized and found to bind with sub-nanomolar affinities to the MC(1) receptor. Both these peptides showed strong agonistic activity at the MC(1) receptor. The MS05 was the most MC(1) receptor selective as it showed virtually no binding affinity for the MC(4) and MC(5) receptors and only micromolar affinity for the MC(3) receptor. The selectivity and potency of the new peptides make them potent tools for studies of MC(1) receptors, as well as novel potential candidate drugs for the treatment of inflammatory conditions.

[Indexed for MEDLINE]

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