- EMDB-5778: Structure of the capsaicin receptor, TRPV1, determined by single ... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-5778
タイトル
Structure of the capsaicin receptor, TRPV1, determined by single particle electron cryo-microscopy
マップデータ
Structure of the capsaicin receptor, TRPV1. This map is direct output from RELION without sharpening using a negative temperature factor. The map was normalized using the program MAPMAN.
試料
試料: Rat TRPV1
タンパク質・ペプチド: TRPV1
キーワード
TRPV1 channel
機能・相同性
機能・相同性情報
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
Transient receptor potential cation channel subfamily V member 1-4 / Transient receptor potential cation channel subfamily V / Ankyrin repeat / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Ion transport domain / Ion transport protein 類似検索 - ドメイン・相同性
Transient receptor potential cation channel subfamily V member 1 類似検索 - 構成要素
ジャーナル: Nature / 年: 2013 タイトル: Structure of the TRPV1 ion channel determined by electron cryo-microscopy. 著者: Maofu Liao / Erhu Cao / David Julius / Yifan Cheng / 要旨: Transient receptor potential (TRP) channels are sensors for a wide range of cellular and environmental signals, but elucidating how these channels respond to physical and chemical stimuli has been ...Transient receptor potential (TRP) channels are sensors for a wide range of cellular and environmental signals, but elucidating how these channels respond to physical and chemical stimuli has been hampered by a lack of detailed structural information. Here we exploit advances in electron cryo-microscopy to determine the structure of a mammalian TRP channel, TRPV1, at 3.4 Å resolution, breaking the side-chain resolution barrier for membrane proteins without crystallization. Like voltage-gated channels, TRPV1 exhibits four-fold symmetry around a central ion pathway formed by transmembrane segments 5-6 (S5-S6) and the intervening pore loop, which is flanked by S1-S4 voltage-sensor-like domains. TRPV1 has a wide extracellular 'mouth' with a short selectivity filter. The conserved 'TRP domain' interacts with the S4-S5 linker, consistent with its contribution to allosteric modulation. Subunit organization is facilitated by interactions among cytoplasmic domains, including amino-terminal ankyrin repeats. These observations provide a structural blueprint for understanding unique aspects of TRP channel function.
EMPIAR-10005 (タイトル: TRPV1 dataset taken on a K2 direct electron detector Data size: 6.3 TB / Data #1: TRPV1 picked particles [tilt series] Data #2: TRPV1 raw multi-frame micrographs [micrographs - multiframe] Data #3: TRPV1 summed frame micrographs [micrographs - single frame])
ダウンロード / ファイル: emd_5778.map.gz / 形式: CCP4 / 大きさ: 62.5 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Structure of the capsaicin receptor, TRPV1. This map is direct output from RELION without sharpening using a negative temperature factor. The map was normalized using the program MAPMAN.
UniProtKB: Transient receptor potential cation channel subfamily V member 1
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実験情報
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構造解析
手法
クライオ電子顕微鏡法
解析
単粒子再構成法
試料の集合状態
particle
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試料調製
濃度
0.3 mg/mL
緩衝液
pH: 7.4 / 詳細: 150 mM NaCl, 20 mM HEPES, 2 mM TCEP
グリッド
詳細: 400 mesh Quantifoil grid
凍結
凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 120 K / 装置: FEI VITROBOT MARK III / 手法: Blot for 6 sec
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電子顕微鏡法
顕微鏡
FEI POLARA 300
詳細
Gatan K2 Summit in super-resolution counting mode. Motion correction as described in Li et al. (2013) Nature Methods.
日付
2013年1月1日
撮影
カテゴリ: CCD / フィルム・検出器のモデル: GATAN K2 (4k x 4k) / 実像数: 946 / 平均電子線量: 21 e/Å2 詳細: Every image is the average of 30 frames recorded using the K2 Summit. The final reconstruction was calculated from images averaged from frames #3-#16.