RES-701-1 is a cyclic peptide composed of 16 common L-amino acids, acting as a specific antagonist for the ETB receptor. RES-701-1 can inhibit the binding of 125I-ET-1 (125I-labeled Endothelin (ET)-1) to the ETB receptor, with an IC50 value of 10 nM[1][2].
IC 50
ETB: 10 nM (IC50)
References
[1] Tanaka T, et al. RES-701-1, a novel, potent, endothelin type B receptor-selective antagonist of microbial origin. Mol Pharmacol. 1994 Apr;45(4):724-30. PMID:8183252 [2] Yamasaki M, et al. RES-701-1, a novel and selective endothelin type B receptor antagonist produced by Streptomyces sp. RE-701 II. Determination of the primary sequence[J]. The Journal of Antibiotics, 1994, 47(3): 276-280. DOI:10.7164/antibiotics.47.276
