+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6d3r | ||||||
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タイトル | Thermostablilized dephosphorylated chicken CFTR | ||||||
要素 | Cystic fibrosis transmembrane conductance regulator | ||||||
キーワード | MEMBRANE PROTEIN / CFTR | ||||||
機能・相同性 | 機能・相同性情報 RHO GTPases regulate CFTR trafficking / RHOQ GTPase cycle / ABC-family proteins mediated transport / Cargo recognition for clathrin-mediated endocytosis / Aggrephagy / Clathrin-mediated endocytosis / Ub-specific processing proteases / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / bicarbonate transport ...RHO GTPases regulate CFTR trafficking / RHOQ GTPase cycle / ABC-family proteins mediated transport / Cargo recognition for clathrin-mediated endocytosis / Aggrephagy / Clathrin-mediated endocytosis / Ub-specific processing proteases / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / bicarbonate transport / chloride channel complex / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / chloride transmembrane transport / isomerase activity / transmembrane transport / recycling endosome membrane / early endosome membrane / apical plasma membrane / endoplasmic reticulum membrane / ATP binding / membrane / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||
生物種 | Gallus gallus (ニワトリ) | ||||||
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: 4.3 Å | ||||||
データ登録者 | Fay, J.F. / Riordan, J.R. | ||||||
引用 | ジャーナル: Biochemistry / 年: 2018 タイトル: Cryo-EM Visualization of an Active High Open Probability CFTR Anion Channel. 著者: Jonathan F Fay / Luba A Aleksandrov / Timothy J Jensen / Liying L Cui / Joseph N Kousouros / Lihua He / Andrei A Aleksandrov / Drew S Gingerich / John R Riordan / James Z Chen / 要旨: The cystic fibrosis transmembrane conductance regulator (CFTR) anion channel, crucial to epithelial salt and water homeostasis, and defective due to mutations in its gene in patients with cystic ...The cystic fibrosis transmembrane conductance regulator (CFTR) anion channel, crucial to epithelial salt and water homeostasis, and defective due to mutations in its gene in patients with cystic fibrosis, is a unique member of the large family of ATP-binding cassette transport proteins. Regulation of CFTR channel activity is stringently controlled by phosphorylation and nucleotide binding. Structural changes that underlie transitions between active and inactive functional states are not yet fully understood. Indeed the first 3D structures of dephosphorylated, ATP-free, and phosphorylated ATP-bound states were only recently reported. Here we have determined the structure of inactive and active states of a thermally stabilized CFTR, the latter with a very high channel open probability, confirmed after reconstitution into proteoliposomes. These structures, obtained at nominal resolution of 4.3 and 6.6 Å, reveal a unique repositioning of the transmembrane helices and regulatory domain density that provide insights into the structural transition between active and inactive functional states of CFTR. Moreover, we observe an extracellular vestibule that may provide anion access to the pore due to the conformation of transmembrane helices 7 and 8 that differs from the previous orthologue CFTR structures. In conclusion, our work contributes detailed structural information on an active, open state of the CFTR anion channel. | ||||||
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 | 6d3r.cif.gz | 200.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6d3r.ent.gz | 146.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6d3r.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 | 6d3r_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6d3r_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 6d3r_validation.xml.gz | 47.8 KB | 表示 | |
CIF形式データ | 6d3r_validation.cif.gz | 71.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/d3/6d3r ftp://data.pdbj.org/pub/pdb/validation_reports/d3/6d3r | HTTPS FTP |
-関連構造データ
関連構造データ | 7793MC 7794C 6d3sC 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 (文献) |
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類似構造データ | |
電子顕微鏡画像生データ | EMPIAR-10219 (タイトル: Cryo-electron microscopy data of thermostabilized avian CFTR Data size: 19.3 Data #1: Binned Particle stacks and meta data for cryo-EM structures of phosphorylated and dephosphorylated avian CFTR [picked particles - multiframe - processed]) |
-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: 162637.438 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Gallus gallus (ニワトリ) / 遺伝子: CFTR / 細胞株 (発現宿主): BHK / 発現宿主: Cricetinae (ネズミ) / 参照: UniProt: A0A1D5PBN0*PLUS, EC: 3.6.3.49 |
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#2: 化合物 |
-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: CFTR / タイプ: CELL / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Gallus gallus (ニワトリ) |
由来(組換発現) | 生物種: Cricetinae (ネズミ) / 細胞: BHK / プラスミド: pNUT |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-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: 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 |
撮影 | 電子線照射量: 48 e/Å2 / 検出モード: SUPER-RESOLUTION 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 | ||||||||||||||||||||||||
3次元再構成 | 解像度: 4.3 Å / 解像度の算出法: FSC 1/2 BIT CUT-OFF / 粒子像の数: 30219 / 対称性のタイプ: POINT |