Solid-Phase Synthesis of Arginine-Containing Peptides by Guanidine Attachment to a Sulfonyl Linker
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Zhong, H. Marlon,Greco, Michael N.,Maryanoff, Bruce E.
p. 9326 - 9330
(2007/10/03)
Development of a Potent Thrombin Receptor Ligand
The N-terminal thrombin receptor peptide H-Ser-Phe-Leu-Leu-Arg-Asn-Pro-Asn-Asp-Lys-Tyr-Glu-Pro-Phe-OH (1) fully activates the thrombin receptor with an EC50 of 10 μM.Structural features in the tetradecapeptide which are responsible for receptor activation have been elucidated.Agonist potency has been enhanced 1000-fold with the design of the shortened peptide H-Ala-Phe(p-F)-Arg-Cha-HArg-Tyr-NH2 (56).This analog exhibits an EC50 of 0,01 μM and is the most potent agonist for receptor activation reported to date.The monoiodinated derivative H-Ala-Phe(p-F)-Arg-Cha-HArg-Tyr(3-I)-NH2 (59) exhibits an EC50 of 0.03 μM, a level sufficient for development of a radioligand.
Feng, Dong-Mei,Veber, Daniel F.,Connolly, Thomas M.,Condra, Cindra,Tang, Mei-Jy,Nutt, Ruth F.
p. 4125 - 4130
(2007/10/03)
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