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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 3j5r | ||||||
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タイトル | Reconstruction of TRPV1 ion channel in complex with capsaicin by single particle cryo-microscopy | ||||||
![]() | Transient receptor potential cation channel subfamily V member 1 | ||||||
![]() | TRANSPORT PROTEIN / TRPV1 channel / capsaicin | ||||||
機能・相同性 | ![]() response to capsazepine / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / peptide secretion / excitatory extracellular ligand-gated monoatomic ion channel activity / temperature-gated ion channel activity / cellular response to temperature stimulus / detection of chemical stimulus involved in sensory perception of pain / urinary bladder smooth muscle contraction / TRP channels ...response to capsazepine / negative regulation of establishment of blood-brain barrier / sensory perception of mechanical stimulus / peptide secretion / excitatory extracellular ligand-gated monoatomic ion channel activity / temperature-gated ion channel activity / cellular response to temperature stimulus / detection of chemical stimulus involved in sensory perception of pain / 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 / response to pH / negative regulation of systemic arterial blood pressure / dendritic spine membrane / chloride channel regulator activity / glutamate secretion / monoatomic cation transmembrane transporter activity / negative regulation of heart rate / cellular response to ATP / ligand-gated monoatomic ion channel activity / 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 / 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 / calcium ion transmembrane transport / calcium channel activity / lipid metabolic process / response to peptide hormone / calcium ion transport / positive regulation of nitric oxide biosynthetic process / transmembrane signaling receptor activity / sensory perception of taste / cellular response to tumor necrosis factor / cellular response to heat / response to heat / positive regulation of cytosolic calcium ion concentration / 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 / metal ion binding / identical protein binding / membrane / 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: 4.2 Å | ||||||
![]() | Liao, M. / Cao, E. / Julius, D. / Cheng, Y. | ||||||
![]() | ![]() タイトル: TRPV1 structures in distinct conformations reveal activation mechanisms. 著者: Erhu Cao / Maofu Liao / Yifan Cheng / David Julius / ![]() 要旨: Transient receptor potential (TRP) channels are polymodal signal detectors that respond to a wide range of physical and chemical stimuli. Elucidating how these channels integrate and convert ...Transient receptor potential (TRP) channels are polymodal signal detectors that respond to a wide range of physical and chemical stimuli. Elucidating how these channels integrate and convert physiological signals into channel opening is essential to understanding how they regulate cell excitability under normal and pathophysiological conditions. Here we exploit pharmacological probes (a peptide toxin and small vanilloid agonists) to determine structures of two activated states of the capsaicin receptor, TRPV1. A domain (consisting of transmembrane segments 1-4) that moves during activation of voltage-gated channels remains stationary in TRPV1, highlighting differences in gating mechanisms for these structurally related channel superfamilies. TRPV1 opening is associated with major structural rearrangements in the outer pore, including the pore helix and selectivity filter, as well as pronounced dilation of a hydrophobic constriction at the lower gate, suggesting a dual gating mechanism. Allosteric coupling between upper and lower gates may account for rich physiological modulation exhibited by TRPV1 and other TRP channels. | ||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 405.9 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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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: 68242.156 Da / 分子数: 4 / 断片: SEE REMARK 999 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() 配列の詳細 | THE TRPV1 CONSTRUCT COMPRISES RESIDUES 110-603 AND 627-764, WITH RESIDUES 604-626 DELETED. RESIDUES ...THE TRPV1 CONSTRUCT COMPRISES RESIDUES 110-603 AND 627-764, WITH RESIDUES 604-626 DELETED. RESIDUES 719-764 ARE NOT MODELED, WITH THE EXCEPTION OF 11 RESIDUES (NUMBERED 752-762 IN THE COORDINATE | |
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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: Rat TRPV1 in complex with capsaicin / タイプ: COMPLEX / 詳細: tetramer |
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分子量 | 値: 0.3 MDa / 実験値: NO |
緩衝液 | 名称: 150 mM NaCl, 20 mM HEPES, 2 mM TCEP / pH: 7.4 / 詳細: 150 mM NaCl, 20 mM HEPES, 2 mM TCEP |
試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: 400 mesh Quantifoil grid |
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / Temp: 120 K / 湿度: 90 % 詳細: Blot for 6 seconds before plunging into liquid ethane (FEI VITROBOT MARK III) 手法: Blot for 6 sec |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 / 日付: 2013年1月1日 詳細: Gatan K2 Summit operated in super-resolution counting mode, image recorded with dose fractionation method. |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 31000 X / 倍率(補正後): 31000 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2 mm / カメラ長: 0 mm |
試料ホルダ | 試料ホルダーモデル: OTHER / 資料ホルダタイプ: FEI Polara cartridge |
撮影 | 電子線照射量: 21 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 詳細: Operated in super-resolution counting mode, dose fractionation |
画像スキャン | デジタル画像の数: 900 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 相対比: 1 |
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解析
EMソフトウェア | 名称: RELION / カテゴリ: 3次元再構成 | ||||||||||||
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CTF補正 | 詳細: Each particle | ||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | ||||||||||||
3次元再構成 | 手法: Maximum likelihood / 解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 33238 / ピクセルサイズ(公称値): 1.2156 Å / ピクセルサイズ(実測値): 1.2156 Å 詳細: The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental ...詳細: The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental density. (Single particle details: 3D classification, refinement, and reconstruction were performed using RELION) (Single particle--Applied symmetry: C4) Refinement type: HALF-MAPS REFINED INDEPENDENTLY / 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL 詳細: REFINEMENT PROTOCOL--de novo model building DETAILS--The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are ...詳細: REFINEMENT PROTOCOL--de novo model building DETAILS--The entire ankyrin structure was fitted as a single rigid body. As a result, the first two ankyrin repeats (UNP residues 111-199) are included but are not well defined by the experimental density. | ||||||||||||
精密化ステップ | サイクル: LAST
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