National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
米国
引用
ジャーナル: Science / 年: 2019 タイトル: Structural basis of cooling agent and lipid sensing by the cold-activated TRPM8 channel. 著者: Ying Yin / Son C Le / Allen L Hsu / Mario J Borgnia / Huanghe Yang / Seok-Yong Lee / 要旨: Transient receptor potential melastatin member 8 (TRPM8) is a calcium ion (Ca)-permeable cation channel that serves as the primary cold and menthol sensor in humans. Activation of TRPM8 by cooling ...Transient receptor potential melastatin member 8 (TRPM8) is a calcium ion (Ca)-permeable cation channel that serves as the primary cold and menthol sensor in humans. Activation of TRPM8 by cooling compounds relies on allosteric actions of agonist and membrane lipid phosphatidylinositol 4,5-bisphosphate (PIP), but lack of structural information has thus far precluded a mechanistic understanding of ligand and lipid sensing by TRPM8. Using cryo-electron microscopy, we determined the structures of TRPM8 in complex with the synthetic cooling compound icilin, PIP, and Ca, as well as in complex with the menthol analog WS-12 and PIP Our structures reveal the binding sites for cooling agonists and PIP in TRPM8. Notably, PIP binds to TRPM8 in two different modes, which illustrate the mechanism of allosteric coupling between PIP and agonists. This study provides a platform for understanding the molecular mechanism of TRPM8 activation by cooling agents.
A: Transient receptor potential cation channel subfamily M member 8 B: Transient receptor potential cation channel subfamily M member 8 C: Transient receptor potential cation channel subfamily M member 8 D: Transient receptor potential cation channel subfamily M member 8
The complete sample sequence including tags and engineered mutations is the following: ...The complete sample sequence including tags and engineered mutations is the following: MATLFQVSMGSMRHRRNGNFESSRLLYSSMSRSIDVACSDADLANFIQENFKKRECVFFTKD TKSMGNLCKCGYPENQHIEGTQVNTTEKWNYKKHTKELPTDAFGDIQFENLGKRGKYIRL SCDTDSETLYDLMTQHWHLKTPNLVISVTGGAKNFALKPRMRKIFSRLIYIAQSKGAWIF TGGTHYGLMKYIGEVVRDNTISRSSEENVVAIGIAAWGMISNRETLIRTADSDGSYLAHY IMDDLKRDPLYCLDNNHTHLLLVDNGTHGHPTIEAKVRTQLEKYISERVIPESNYGGKIP IVCFAQGGGKETLKSINVAIKSKIPCVVVEGSGRIADVIASLVEAEGTLASSCVKESLLR FLPRTISRLSEEETESWIKWIKEVLESPHLLTVIKIEEAGDEIVSNAISFALYKAFSTNE HDRDNWNGQLKLLLEWNQLDLASDEIFTNDRNWESADLQDVMFTALVKDRPKFVRLFLEN GLNLRKFLTTEVLRELYTNNFSSLVFKNLQIAKNSYNDALLTFVWKMVEDFRRGAKRDDK NSKDEMEIELSEECPITRHPLQALFIWSVLQNKKELSKVIWEQTRGCTLAALGASKLLKS MAKVKNDINAAGESEELANEYETRAVELFTECYSNDEDLAEQLLTYSCEAWGGSNCLELA VEARDQQFIAQPGVQNFLSKQWYGEISRDTKNWKIILCLFFFPLIGCGFISFRKKPVEKT KKLFLYYVSFFTSPFVVFSWNVIFYIAFLLLFAYVLLMDFQKEPTALEIILYVLVFILLC DEVRQWYMNGSKYFSDLWNVMDTLGIFYFIAGIVFRLHSDESSWYSGRVIFCLDYIVFTL RLIHIFTVSRNLGPKIIMLQRMMIDVFFFLFLFAVWMVAFGVARQGILRKNEHRWEWIFR SVIYEPYLAMFGQYPDDIDGTTYNFDHCTFSGNESKPLCVELDANNQPRFPEWITIPLVC IYMLSTNILLVNLLVAMFGYTVGSVQENNDQVWKFQRFFLVQEYCSRLTIPFPFVIFAYI FMVMRKCFKCCCKKESKEPSVCCSRNEDNEILAWEAVMKENYLVKINTKASDSSEEMVHR FRQLDAKLSDLKGLLKEISSKIKSNSLEVLFQGPDYKDDDDKAHHHHHHHHHH
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実験情報
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実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
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試料調製
構成要素
名称: Transient receptor potential melastatin member 8 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT
由来(天然)
生物種: Ficedula albicollis (シロエリヒタキ)
由来(組換発現)
生物種: Homo sapiens (ヒト)
緩衝液
pH: 8
試料
濃度: 0.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES