+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6djs | |||||||||
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タイトル | Hybrid model of TRPC3 in GDN | |||||||||
要素 | Short transient receptor potential channel 3 | |||||||||
キーワード | TRANSPORT PROTEIN / TRP channel / Ion Channel / Membrane protein / cerebellum / moonwalker | |||||||||
機能・相同性 | 機能・相同性情報 positive regulation of cardiac muscle hypertrophy in response to stress / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / Effects of PIP2 hydrolysis / Elevation of cytosolic Ca2+ levels / cation channel complex / inositol 1,4,5 trisphosphate binding / calcium-activated cation channel activity / TRP channels / positive regulation of calcium ion transport into cytosol ...positive regulation of cardiac muscle hypertrophy in response to stress / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / Effects of PIP2 hydrolysis / Elevation of cytosolic Ca2+ levels / cation channel complex / inositol 1,4,5 trisphosphate binding / calcium-activated cation channel activity / TRP channels / positive regulation of calcium ion transport into cytosol / response to ATP / phototransduction / single fertilization / MECP2 regulates neuronal receptors and channels / regulation of cytosolic calcium ion concentration / calcium ion transmembrane transport / calcium channel activity / response to calcium ion / calcium ion transport / metal ion binding / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
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: 5.8 Å | |||||||||
データ登録者 | Sierra-Valdez, F.J. / Azumaya, C.M. / Nakagawa, T. / Cordero-Morales, J.F. | |||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: J Biol Chem / 年: 2018 タイトル: Structure-function analyses of the ion channel TRPC3 reveal that its cytoplasmic domain allosterically modulates channel gating. 著者: Francisco Sierra-Valdez / Caleigh M Azumaya / Luis O Romero / Terunaga Nakagawa / Julio F Cordero-Morales / 要旨: The transient receptor potential ion channels support Ca permeation in many organs, including the heart, brain, and kidney. Genetic mutations in transient receptor potential cation channel subfamily ...The transient receptor potential ion channels support Ca permeation in many organs, including the heart, brain, and kidney. Genetic mutations in transient receptor potential cation channel subfamily C member 3 (TRPC3) are associated with neurodegenerative diseases, memory loss, and hypertension. To better understand the conformational changes that regulate TRPC3 function, we solved the cryo-EM structures for the full-length human TRPC3 and its cytoplasmic domain (CPD) in the apo state at 5.8- and 4.0-Å resolution, respectively. These structures revealed that the TRPC3 transmembrane domain resembles those of other TRP channels and that the CPD is a stable module involved in channel assembly and gating. We observed the presence of a C-terminal domain swap at the center of the CPD where horizontal helices (HHs) transition into a coiled-coil bundle. Comparison of TRPC3 structures revealed that the HHs can reside in two distinct positions. Electrophysiological analyses disclosed that shortening the length of the C-terminal loop connecting the HH with the TRP helices increases TRPC3 activity and that elongating the length of the loop has the opposite effect. Our findings indicate that the C-terminal loop affects channel gating by altering the allosteric coupling between the cytoplasmic and transmembrane domains. We propose that molecules that target the HH may represent a promising strategy for controlling TRPC3-associated neurological disorders and hypertension. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6djs.cif.gz | 292 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6djs.ent.gz | 236.9 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6djs.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 6djs_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6djs_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 6djs_validation.xml.gz | 54.9 KB | 表示 | |
CIF形式データ | 6djs_validation.cif.gz | 86.6 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/dj/6djs ftp://data.pdbj.org/pub/pdb/validation_reports/dj/6djs | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 68783.977 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: TRPC3, TRP3 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: Q13507 |
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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 |
-試料調製
構成要素 | 名称: Homotetramer of human TRPC3 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.97 MDa / 実験値: YES | ||||||||||||||||||||
由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) | ||||||||||||||||||||
緩衝液 | pH: 8 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Monodisperse | ||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: C-flat-2/1 | ||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
-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 |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 31000 X |
試料ホルダ | 凍結剤: NITROGEN |
撮影 | 電子線照射量: 100 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | ||||||||||||
3次元再構成 | 解像度: 5.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 56291 / 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | B value: 400 / プロトコル: OTHER / 空間: REAL 詳細: Hybrid model of 6DJR and 6CV9 (cytoplasmic domain of TRPC6 with amino acids mutated that differ between TRPC6 and TRPC3) |