PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15306657-2 2004 To determine the binding site for a competitive inverse agonist, midazolam, three of the four residues that directly contact TRH and other residues that restrain TRH-R1 in an inactive conformation were screened by mutagenesis and binding assays. Midazolam 65-74 thyrotropin releasing hormone Homo sapiens 125-128 15306657-2 2004 To determine the binding site for a competitive inverse agonist, midazolam, three of the four residues that directly contact TRH and other residues that restrain TRH-R1 in an inactive conformation were screened by mutagenesis and binding assays. Midazolam 65-74 thyrotropin releasing hormone Homo sapiens 162-165 15306657-3 2004 We found that two residues that directly contact TRH, Asn-110 in transmembrane helix 3 (3.37) and Arg-306 in transmembrane helix 7 (7.39), were important for midazolam binding but another, Tyr-282 in transmembrane helix 6 (6.51), was not. Midazolam 158-167 thyrotropin releasing hormone Homo sapiens 49-52 15306657-4 2004 A highly conserved residue, Trp-279 in transmembrane helix 6 (6.48), which was reported to be critical in stabilizing TRH-R1 in an inactive state but not for TRH binding, was critical for midazolam binding. Midazolam 188-197 thyrotropin releasing hormone Homo sapiens 118-121 15306657-5 2004 We used our previous model of the unoccupied TRH-R1 to generate a model of the TRH-R1/midazolam complex. Midazolam 86-95 thyrotropin releasing hormone Homo sapiens 45-48 15306657-5 2004 We used our previous model of the unoccupied TRH-R1 to generate a model of the TRH-R1/midazolam complex. Midazolam 86-95 thyrotropin releasing hormone Homo sapiens 79-82 15306657-6 2004 The experimental results and the molecular model of the complex suggest that midazolam binds to TRH-R1 within a transmembrane helical pocket that partially overlaps the TRH binding pocket. Midazolam 77-86 thyrotropin releasing hormone Homo sapiens 96-99 15306657-6 2004 The experimental results and the molecular model of the complex suggest that midazolam binds to TRH-R1 within a transmembrane helical pocket that partially overlaps the TRH binding pocket. Midazolam 77-86 thyrotropin releasing hormone Homo sapiens 169-172 15306657-8 2004 We suggest that the mechanism of inverse agonism effected by midazolam involves its direct interaction with Trp-279, which contributes to the stabilization of the inactive conformation of TRH-R1. Midazolam 61-70 thyrotropin releasing hormone Homo sapiens 188-191