6LRY:
reference: Crystal structure of human endothelin ETB receptor in complex with sarafotoxin S6b., Izume T, Miyauchi H, Shihoya W, Nureki O, Biochem Biophys Res Commun. 2020 Jan 28. pii: S0006-291X(20)30021-8. doi:, 10.1016/j.bbrc.2019.12.091. PMID: 32001000

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).