Database of articles cited by EMDB/PDB/SASBDB data

Keywords
Structure methods	All X-ray diffraction NMR electron microscopy small angle scattering neutron diffraction fiber diffraction powder diffraction infrared spectroscopy EPR fluorescence transfer theoretical model Hybrid
Author
Journal
IF	>30 >20 >10 >5 all

Title	Vestibular modulation by stimulant derivatives in a pentameric ligand-gated ion channel.
Journal, issue, pages	Br J Pharmacol, Year 2025
Publish date	Mar 11, 2025
Authors	Emelia Karlsson / Olivia Andén / Chen Fan / Zaineb Fourati / Ahmed Haouz / Yuxuan Zhuang / Rebecca J Howard / Marc Delarue / Erik Lindahl /
PubMed Abstract	BACKGROUND AND PURPOSE: Allosteric modulation of pentameric ligand-gated ion channels (pLGICs) are critical for the action of neurotransmitters and many psychoactive drugs. However, details of their ...BACKGROUND AND PURPOSE: Allosteric modulation of pentameric ligand-gated ion channels (pLGICs) are critical for the action of neurotransmitters and many psychoactive drugs. However, details of their modulatory mechanisms remain unclear, especially beyond the orthosteric neurotransmitter-binding sites. The recently reported prokaryotic symbiont of Tevnia jerichonana ligand-gated ion channel (sTeLIC), a pH-gated homologue of eukaryotic receptors in the pLGIC family, is thought to be modulated by aromatic compounds via a relatively uncharacterised modulatory site in the extracellular vestibule. EXPERIMENTAL APPROACH: We have characterised the effects of psychostimulant derivatives on sTeLIC using two-electrode voltage-clamp electrophysiology in the presence and absence of engineered mutations, and determined X-ray and cryo-EM structures of the channel in both closed and open states. KEY RESULTS: We have shown that sTeLIC is sensitive to potentiation by several amphiphilic compounds, which preferentially bind to a vestibular pocket in the contracted open-state extracellular domain. CONCLUSIONS AND IMPLICATIONS: This work provides a detailed structure-function mechanism for allosteric potentiation via a noncanonical ligand site, with potential conservation of the eukaryotic pentameric ligand-gated ion channels.
External links	Br J Pharmacol / PubMed:40065647
Methods	EM (single particle) / X-ray diffraction
Resolution	2.19 - 4.16 Å
Structure data	50030 9ex4 EMDB-50030, PDB-9ex4: CryoEM structure of sTeLIC nanodisc in complex with fluorinated fos-choline-8 in open state Method: EM (single particle) / Resolution: 2.19 Å 50031 9ex6 EMDB-50031, PDB-9ex6: CryoEM structure of sTeLIC nanodisc in closed state Method: EM (single particle) / Resolution: 2.35 Å 50194 9f5n EMDB-50194, PDB-9f5n: CryoEM structure of open sTeLIC in detergent, in complex with n-Dodecyl-Beta-Maltoside Method: EM (single particle) / Resolution: 2.56 Å 50195 9f5o EMDB-50195, PDB-9f5o: CryoEM structure of open sTeLIC in detergent, with 4-Bromoamphetamine Method: EM (single particle) / Resolution: 4.16 Å PDB-9ewa: The sTeLIC pentameric Ligand-Gated Ion Channel (wild-type) in complex with 4-Bromophenethylamine Method: X-RAY DIFFRACTION / Resolution: 3.006 Å PDB-9ewl: The sTeLIC pentameric Ligand-Gated Ion Channel (wild-type) in complex with 4-bromoamphetamine Method: X-RAY DIFFRACTION / Resolution: 3.2 Å
Chemicals	ChemComp-BNG: nonyl beta-D-glucopyranoside / detergentYM ChemComp-VMT: 2-(4-bromophenyl)ethanamine ChemComp-HOH: WATER PDB-1h7r: SCHIFF-BASE COMPLEX OF YEAST 5-AMINOLAEVULINIC ACID DEHYDRATASE WITH SUCCINYLACETONE AT 2.0 A RESOLUTION. PDB-1h8k: A-SPECTRIN SH3 DOMAIN A11V, V23L, M25V, V53I, V58L MUTANT ChemComp-HEX: HEXANE ChemComp-EPE: 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID / pH bufferYM ChemComp-D12: DODECANE ChemComp-OCT: N-OCTANE ChemComp-C14: TETRADECANE ChemComp-D10: DECANE ChemComp-LMT: DODECYL-BETA-D-MALTOSIDE / detergent*YM
Source	endosymbiont of tevnia jerichonana (vent tica) (bacteria)
Keywords	MEMBRANE PROTEIN / Ion channel / TRANSLOCASE / Pentameric ligand-gated ion channel / cys-loop receptor / pLGIC