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Structure of the cold- and menthol-sensing ion channel TRPM8
Science ( IF 41.058 ) Pub Date : 2018-01-12 , DOI: 10.1126/science.aan4325
Ying Yin, Mengyu Wu, Lejla Zubcevic, William F. Borschel, Gabriel C. Lander, Seok-Yong Lee

Transient receptor potential melastatin (TRPM) cation channels are polymodal sensors that are involved in a variety of physiological processes. Within the TRPM family, member 8 (TRPM8) is the primary cold and menthol sensor in humans. We determined the cryo–electron microscopy structure of the full-length TRPM8 from the collared flycatcher at an overall resolution of ~4.1 ångstroms. Our TRPM8 structure reveals a three-layered architecture. The amino-terminal domain with a fold distinct among known TRP structures, together with the carboxyl-terminal region, forms a large two-layered cytosolic ring that extensively interacts with the transmembrane channel layer. The structure suggests that the menthol-binding site is located within the voltage-sensor–like domain and thus provides a structural glimpse of the design principle of the molecular transducer for cold and menthol sensation.

更新日期:2018-01-12

 

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