RB 101 suppresses enkephalinase and aminopeptidases; biologically cleaved at disulfide to produce inhibitors of both aminopeptidase N and neutral endopeptidase.
EVT-101 is a GluN2B antagonist, binding at the same GluN1 GluN2B dimer interface as ifenprodil but adopting a remarkably different binding mode involving a distinct subcavity and receptor interactions.