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TitleMolecular Mechanisms of Methamphetamine-Induced Addiction via TAAR1 Activation.
Journal, issue, pagesJ Med Chem, Vol. 67, Issue 20, Page 18593-18605, Year 2024
Publish dateOct 24, 2024
AuthorsYun Lin / Jiening Wang / Fan Shi / Linlin Yang / Shan Wu / Anna Qiao / Sheng Ye /
PubMed AbstractTrace amine-associated receptor 1 (TAAR1), a member of the trace amine receptor family, recognizes various trace amines in the brain, including endogenous β-phenylethylamine (PEA) and ...Trace amine-associated receptor 1 (TAAR1), a member of the trace amine receptor family, recognizes various trace amines in the brain, including endogenous β-phenylethylamine (PEA) and methamphetamine (METH). TAAR1 is a novel target for several neurological disorders, including schizophrenia, depression, and substance abuse. Herein, we report the structure of the human TAAR1-G protein complex bound to METH. Using functional studies, we reveal the molecular basis of METH recognition by TAAR1, and potential mechanisms underlying the selectivity of TAAR1 for different ligands. Molecular dynamics simulations further elucidated possible mechanisms for the binding of chiral amphetamine (AMPH)-like psychoactive drugs to TAAR1. Additionally, we discovered a hydrophobic core on the transmembrane helices (TM), TM5 and TM6, explaining the unique mechanism of TAAR1 activation. These findings reveal the ligand recognition pattern and activation mechanism of TAAR1, which has important implications for the development of next-generation treatments for substance abuse and various neurological disorders.
External linksJ Med Chem / PubMed:39358311 / PubMed Central
MethodsEM (single particle)
Resolution2.66 Å
Structure data

61567

9jkq

EMDB-61567, PDB-9jkq:
Cryo-EM structure of the METH-bound hTAAR1-Gs complex
Method: EM (single particle) / Resolution: 2.66 Å

Chemicals

ChemComp-B40:
(2S)-N-methyl-1-phenylpropan-2-amine

Source
  • homo sapiens (human)
  • escherichia coli (E. coli)
KeywordsSIGNALING PROTEIN / cryo-EM;GPCR;Trace amine-associated receptor 1

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