我的账户 7×24小时客服热线:400-829-7929 语言:
热门产品: 人参皂苷Rh2,人参皂苷Rg3,胡萝卜苷, 木犀草苷
产品分类
在线咨询
联系电话:
销售:
400-829-7929(7*24小时)
028-82633860
028-82633397 
028-
82633165
技术服务和产品定制:
028-82633987
在线服务:  
沈帅 
文静  点击这里给我发消息
贺丹丹  
点击这里给我发消息
      
文献信息

Structural mechanisms underlying activation of TRPV1 channels by pungent compounds in gingers

期刊名:British Journal of Pharmacology
文献编号:
文献地址: https://bpspubs.onlinelibrary.wiley.com/doi/abs/10.1111/bph.14766
发表日期:17 June 2019
Abstract

Background and Purpose

Like chili peppers, gingers produce pungent stimuli by a group of vanilloid compounds that activate the nociceptive transient receptor potential vanilloid 1 (TRPV1) ion channel. How these compounds interact with TRPV1 remains unclear.

Experimental Approach

We used computational structural modelling, functional tests (electrophysiology and calcium imaging), and mutagenesis to investigate the structural mechanisms underlying ligand–channel interactions.

Key Results

The potency of three principal pungent compounds from ginger —shogaol, gingerol, and zingerone—depends on the same two residues in the TRPV1 channel that form a hydrogen bond with the chili pepper pungent compound, capsaicin. Computational modelling revealed binding poses of these ginger compounds similar to those of capsaicin, including a “head‐down tail‐up” orientation, two specific hydrogen bonds, and important contributions of van der Waals interactions by the aliphatic tail. Our study also identified a novel horizontal binding pose of zingerone that allows it to directly interact with the channel pore when bound inside the ligand‐binding pocket. These observations offer a molecular level explanation for how unique structures in the ginger compounds affect their channel activation potency.

Conclusions and Implications

Mechanistic insights into the interactions of ginger compounds and the TRPV1 cation channel should help guide drug discovery efforts to modulate nociception.

… Materials Capsaicin was obtained from Abcam (China). 6-shogaol and zingerone were obtained from Chengdu Biopurify Phytochemicals Ltd (China). Capsazepine and
6-gingerol were obtained from MedChenExpress USA (China) … 
相关产品