7LPE

Cryo-EM structure of full-length TRPV1 with capsaicin at 48 degrees Celsius, in an open state, class 1

7LPE の概要

• エントリーDOI: 10.2210/pdb7lpe/pdb
• EMDBエントリー: 23479
• 分子名称: Transient receptor potential cation channel subfamily V member 1, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine, [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate, ... (4 entities in total)
• 機能のキーワード: heat sensing ion channel, membrane protein
• 由来する生物種: Rattus norvegicus (Rat)
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 402012.97

構造登録者

Kwon, D.H.,Zhang, F.,Suo, Y.,Lee, S.-Y. (登録日: 2021-02-11, 公開日: 2021-07-28, 最終更新日: 2024-10-16)

主引用文献

Kwon, D.H.,Zhang, F.,Suo, Y.,Bouvette, J.,Borgnia, M.J.,Lee, S.Y.
Heat-dependent opening of TRPV1 in the presence of capsaicin.
Nat.Struct.Mol.Biol., 28:554-563, 2021

PubMed Abstract: Transient receptor potential vanilloid member 1 (TRPV1) is a Ca-permeable cation channel that serves as the primary heat and capsaicin sensor in humans. Using cryo-EM, we have determined the structures of apo and capsaicin-bound full-length rat TRPV1 reconstituted into lipid nanodiscs over a range of temperatures. This has allowed us to visualize the noxious heat-induced opening of TRPV1 in the presence of capsaicin. Notably, noxious heat-dependent TRPV1 opening comprises stepwise conformational transitions. Global conformational changes across multiple subdomains of TRPV1 are followed by the rearrangement of the outer pore, leading to gate opening. Solvent-accessible surface area analyses and functional studies suggest that a subset of residues form an interaction network that is directly involved in heat sensing. Our study provides a glimpse of the molecular principles underlying noxious physical and chemical stimuli sensing by TRPV1, which can be extended to other thermal sensing ion channels.

PubMed: 34239123
DOI: 10.1038/s41594-021-00616-3

実験手法

ELECTRON MICROSCOPY (3.72 Å)