+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8ubr | |||||||||
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タイトル | Complex of the phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with CFTRinh-172 and ATP/Mg | |||||||||
要素 | Cystic fibrosis transmembrane conductance regulator | |||||||||
キーワード | MEMBRANE PROTEIN / Inhibitor / CFTR | |||||||||
機能・相同性 | 機能・相同性情報 positive regulation of voltage-gated chloride channel activity / positive regulation of cyclic nucleotide-gated ion channel activity / Sec61 translocon complex binding / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / positive regulation of enamel mineralization / transepithelial water transport / RHO GTPases regulate CFTR trafficking / intracellular pH elevation / amelogenesis ...positive regulation of voltage-gated chloride channel activity / positive regulation of cyclic nucleotide-gated ion channel activity / Sec61 translocon complex binding / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / positive regulation of enamel mineralization / transepithelial water transport / RHO GTPases regulate CFTR trafficking / intracellular pH elevation / amelogenesis / chloride channel inhibitor activity / ATPase-coupled inorganic anion transmembrane transporter activity / Golgi-associated vesicle membrane / multicellular organismal-level water homeostasis / cholesterol transport / membrane hyperpolarization / vesicle docking involved in exocytosis / bicarbonate transport / bicarbonate transmembrane transporter activity / chloride channel regulator activity / chloride transmembrane transporter activity / sperm capacitation / chloride channel activity / cholesterol biosynthetic process / RHOQ GTPase cycle / positive regulation of insulin secretion involved in cellular response to glucose stimulus / positive regulation of exocytosis / chloride channel complex / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / cellular response to forskolin / cellular response to cAMP / chloride transmembrane transport / response to endoplasmic reticulum stress / isomerase activity / establishment of localization in cell / PDZ domain binding / Defective CFTR causes cystic fibrosis / Late endosomal microautophagy / clathrin-coated endocytic vesicle membrane / ABC-family proteins mediated transport / transmembrane transport / recycling endosome / Aggrephagy / Chaperone Mediated Autophagy / recycling endosome membrane / Cargo recognition for clathrin-mediated endocytosis / Clathrin-mediated endocytosis / protein-folding chaperone binding / early endosome membrane / early endosome / endosome membrane / Ub-specific processing proteases / apical plasma membrane / lysosomal membrane / endoplasmic reticulum membrane / enzyme binding / cell surface / ATP hydrolysis activity / protein-containing complex / ATP binding / membrane / nucleus / plasma membrane / cytosol / cytoplasm 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: 2.7 Å | |||||||||
データ登録者 | Young, P.G. / Fiedorczuk, K. / Chen, J. | |||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2024 タイトル: Structural basis for CFTR inhibition by CFTR-172. 著者: Paul G Young / Jesper Levring / Karol Fiedorczuk / Scott C Blanchard / Jue Chen / 要旨: The cystic fibrosis transmembrane conductance regulator (CFTR) is an anion channel that regulates electrolyte and fluid balance in epithelial tissues. While activation of CFTR is vital to treating ...The cystic fibrosis transmembrane conductance regulator (CFTR) is an anion channel that regulates electrolyte and fluid balance in epithelial tissues. While activation of CFTR is vital to treating cystic fibrosis, selective inhibition of CFTR is a potential therapeutic strategy for secretory diarrhea and autosomal dominant polycystic kidney disease. Although several CFTR inhibitors have been developed by high-throughput screening, their modes of action remain elusive. In this study, we determined the structure of CFTR in complex with the inhibitor CFTR-172 to an overall resolution of 2.7 Å by cryogenic electron microscopy. We observe that CFTR-172 binds inside the pore near transmembrane helix 8, a critical structural element that links adenosine triphosphate hydrolysis with channel gating. Binding of CFTR-172 stabilizes a conformation in which the chloride selectivity filter is collapsed, and the pore is blocked from the extracellular side of the membrane. Single-molecule fluorescence resonance energy transfer experiments indicate that CFTR-172 inhibits channel gating without compromising nucleotide-binding domain dimerization. Together, these data reconcile previous biophysical observations and provide a molecular basis for the activity of this widely used CFTR inhibitor. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8ubr.cif.gz | 257.1 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8ubr.ent.gz | 194.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8ubr.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 | 8ubr_validation.pdf.gz | 1.8 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8ubr_full_validation.pdf.gz | 1.8 MB | 表示 | |
XML形式データ | 8ubr_validation.xml.gz | 51.2 KB | 表示 | |
CIF形式データ | 8ubr_validation.cif.gz | 76.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ub/8ubr ftp://data.pdbj.org/pub/pdb/validation_reports/ub/8ubr | HTTPS FTP |
-関連構造データ
関連構造データ | 42101MC 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 | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 1種, 1分子 A
#1: タンパク質 | 分子量: 168334.469 Da / 分子数: 1 / 変異: E1371Q / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CFTR, ABCC7 / 細胞株 (発現宿主): HEK 293S GnTl- / 発現宿主: Homo sapiens (ヒト) 参照: UniProt: P13569, channel-conductance-controlling ATPase |
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-非ポリマー , 6種, 13分子
#2: 化合物 | #3: 化合物 | #4: 化合物 | #5: 化合物 | #6: 化合物 | ChemComp-WG5 / | 分子量: 409.402 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C18H10F3NO3S2 / タイプ: SUBJECT OF INVESTIGATION #7: 水 | ChemComp-HOH / | |
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-詳細
研究の焦点であるリガンドがあるか | 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 |
-試料調製
構成要素 | 名称: Complex of CFTR with the small molecule inhibitor CFTRinh-172 タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 0.168 MDa / 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.5 |
試料 | 濃度: 5.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R0.6/1 |
急速凍結 | 凍結剤: ETHANE / 湿度: 100 % |
-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 / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 2.7 mm |
撮影 | 電子線照射量: 65.6 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k 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: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 66267 / 対称性のタイプ: POINT | |||||||||
精密化 | 交差検証法: NONE |