TRPM8 is a calcium ion channel that is activated by multiple factors, such as temperature, voltage, pressure, and osmolality. It is a therapeutic target for anticancer drug development, and its modulators can be utilized for several pathological conditions. Here, we present a cryo-electron microscopy structure of a human TRPM8 channel in the closed state that was solved at 2.7 Å resolution. Based on our reconstruction, we built the most complete model of the N-terminal pre-melastatin homology region. We also visualized several ligands that are bound by the protein and modeled how the human channel interacts with icilin. Analyses of pore helices showed that all available TRPM8 structures can be grouped into closed and desensitized states based on the register of pore helix S6 and the resulting positioning of particular amino acid residues at the channel constriction.

Structure of human TRPM8 channel / S. Palchevskyi, M. Czarnocki-Cieciura, G. Vistoli, S. Gervasoni, E. Nowak, A.R. Beccari, M. Nowotny, C. Talarico. - (2022 Oct 20). [10.1101/2022.10.19.512915]

Structure of human TRPM8 channel

G. Vistoli;
2022

Abstract

TRPM8 is a calcium ion channel that is activated by multiple factors, such as temperature, voltage, pressure, and osmolality. It is a therapeutic target for anticancer drug development, and its modulators can be utilized for several pathological conditions. Here, we present a cryo-electron microscopy structure of a human TRPM8 channel in the closed state that was solved at 2.7 Å resolution. Based on our reconstruction, we built the most complete model of the N-terminal pre-melastatin homology region. We also visualized several ligands that are bound by the protein and modeled how the human channel interacts with icilin. Analyses of pore helices showed that all available TRPM8 structures can be grouped into closed and desensitized states based on the register of pore helix S6 and the resulting positioning of particular amino acid residues at the channel constriction.
Settore CHIM/08 - Chimica Farmaceutica
20-ott-2022
https://www.biorxiv.org/content/10.1101/2022.10.19.512915v1
File in questo prodotto:
File Dimensione Formato  
2022.10.19.512915.full.pdf

accesso aperto

Tipologia: Pre-print (manoscritto inviato all'editore)
Dimensione 1.92 MB
Formato Adobe PDF
1.92 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/944833
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact