A role for the Val291 residue within the transmembrane domain 2 in diltiazem- and TMB-8 [3,4,5-trimethoxybenzoic acid 8-(diethylamino)octyl ester]-mediated 5-hydroxytryptamine type 3A receptor regulations.

Abstract excerpt

Previous reports have shown that diltiazem and TMB, calcium channel antagonists, inhibit 5-hydroxytryptamine type 3A (5-HT(3A)) receptor-mediated currents (I(5-HT)) in cell lines and in heterologously expressed Xenopus oocytes. In the present study, we sought to elucidate the molecular mechanisms underlying diltiazem- and TMB-induced 5-HT(3A) receptor regulations. We used the two-microelectrode voltage clamp...

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