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基本情報
登録情報 | データベース: PDB / ID: 7mze | ||||||||||||||||||
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タイトル | Cryo-EM structure of minimal TRPV1 with 2 bound RTX in opposite pockets | ||||||||||||||||||
![]() | Transient receptor potential cation channel subfamily V member 1 | ||||||||||||||||||
![]() | TRANSPORT PROTEIN / TRP channel / cryo-EM / nanodisc / stoichiometry | ||||||||||||||||||
機能・相同性 | ![]() response to capsazepine / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / excitatory extracellular ligand-gated monoatomic ion channel activity / peptide secretion / temperature-gated ion channel activity / detection of chemical stimulus involved in sensory perception of pain / cellular response to temperature stimulus / urinary bladder smooth muscle contraction / TRP channels ...response to capsazepine / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / excitatory extracellular ligand-gated monoatomic ion channel activity / peptide secretion / temperature-gated ion channel activity / detection of chemical stimulus involved in sensory perception of pain / cellular response to temperature stimulus / urinary bladder smooth muscle contraction / TRP channels / smooth muscle contraction involved in micturition / fever generation / thermoception / detection of temperature stimulus involved in thermoception / cellular response to acidic pH / negative regulation of systemic arterial blood pressure / response to pH / dendritic spine membrane / chloride channel regulator activity / monoatomic cation transmembrane transporter activity / glutamate secretion / negative regulation of heart rate / cellular response to ATP / response to pain / temperature homeostasis / cellular response to alkaloid / diet induced thermogenesis / cellular response to cytokine stimulus / intracellularly gated calcium channel activity / behavioral response to pain / detection of temperature stimulus involved in sensory perception of pain / negative regulation of mitochondrial membrane potential / calcium ion import across plasma membrane / ligand-gated monoatomic ion channel activity / monoatomic cation channel activity / extracellular ligand-gated monoatomic ion channel activity / sensory perception of pain / phosphatidylinositol binding / GABA-ergic synapse / phosphoprotein binding / microglial cell activation / cellular response to nerve growth factor stimulus / cellular response to growth factor stimulus / lipid metabolic process / calcium channel activity / calcium ion transmembrane transport / response to peptide hormone / calcium ion transport / transmembrane signaling receptor activity / positive regulation of nitric oxide biosynthetic process / sensory perception of taste / cellular response to tumor necrosis factor / cellular response to heat / positive regulation of cytosolic calcium ion concentration / response to heat / monoatomic ion transmembrane transport / protein homotetramerization / postsynaptic membrane / calmodulin binding / neuron projection / positive regulation of apoptotic process / external side of plasma membrane / neuronal cell body / dendrite / negative regulation of transcription by RNA polymerase II / ATP binding / identical protein binding / membrane / metal ion binding / plasma membrane 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | ![]() ![]() | ||||||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.42 Å | ||||||||||||||||||
![]() | Zhang, K. / Julius, D. / Cheng, Y. | ||||||||||||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Structural snapshots of TRPV1 reveal mechanism of polymodal functionality. 著者: Kaihua Zhang / David Julius / Yifan Cheng / ![]() 要旨: Many transient receptor potential (TRP) channels respond to diverse stimuli and conditionally conduct small and large cations. Such functional plasticity is presumably enabled by a uniquely dynamic ...Many transient receptor potential (TRP) channels respond to diverse stimuli and conditionally conduct small and large cations. Such functional plasticity is presumably enabled by a uniquely dynamic ion selectivity filter that is regulated by physiological agents. What is currently missing is a "photo series" of intermediate structural states that directly address this hypothesis and reveal specific mechanisms behind such dynamic channel regulation. Here, we exploit cryoelectron microscopy (cryo-EM) to visualize conformational transitions of the capsaicin receptor, TRPV1, as a model to understand how dynamic transitions of the selectivity filter in response to algogenic agents, including protons, vanilloid agonists, and peptide toxins, permit permeation by small and large organic cations. These structures also reveal mechanisms governing ligand binding substates, as well as allosteric coupling between key sites that are proximal to the selectivity filter and cytoplasmic gate. These insights suggest a general framework for understanding how TRP channels function as polymodal signal integrators. | ||||||||||||||||||
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 388.6 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.7 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.7 MB | 表示 | |
XML形式データ | ![]() | 69.4 KB | 表示 | |
CIF形式データ | ![]() | 103.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 24091MC ![]() 7l2hC ![]() 7l2iC ![]() 7l2jC ![]() 7l2kC ![]() 7l2lC ![]() 7l2mC ![]() 7l2nC ![]() 7l2oC ![]() 7l2pC ![]() 7l2rC ![]() 7l2sC ![]() 7l2tC ![]() 7l2uC ![]() 7l2vC ![]() 7l2wC ![]() 7l2xC ![]() 7mz5C ![]() 7mz6C ![]() 7mz7C ![]() 7mz9C ![]() 7mzaC ![]() 7mzbC ![]() 7mzcC ![]() 7mzdC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 73016.352 Da / 分子数: 4 / 断片: UNP residues 110-764 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: 化合物 | #3: 化合物 | ChemComp-NA / | #4: 化合物 | 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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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: minimal TRPV1 in nanodisc / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 6.85 |
試料 | 包埋: YES / シャドウイング: NO / 染色: NO / 凍結: YES |
EM embedding | Material: nanodisc |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 66 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
CTF補正 | タイプ: NONE |
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3次元再構成 | 解像度: 3.42 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 10873 / 対称性のタイプ: POINT |