+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6wb8 | ||||||
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タイトル | Cryo-EM structure of PKD2 C331S disease variant | ||||||
要素 | Polycystin-2 | ||||||
キーワード | TRANSPORT PROTEIN / PKD2 | ||||||
機能・相同性 | 機能・相同性情報 detection of nodal flow / metanephric smooth muscle tissue development / metanephric cortex development / metanephric cortical collecting duct development / metanephric distal tubule development / polycystin complex / mesonephric tubule development / mesonephric duct development / metanephric part of ureteric bud development / determination of liver left/right asymmetry ...detection of nodal flow / metanephric smooth muscle tissue development / metanephric cortex development / metanephric cortical collecting duct development / metanephric distal tubule development / polycystin complex / mesonephric tubule development / mesonephric duct development / metanephric part of ureteric bud development / determination of liver left/right asymmetry / renal tubule morphogenesis / metanephric ascending thin limb development / HLH domain binding / metanephric mesenchyme development / metanephric S-shaped body morphogenesis / renal artery morphogenesis / basal cortex / positive regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity / migrasome / cilium organization / VxPx cargo-targeting to cilium / detection of mechanical stimulus / calcium-induced calcium release activity / voltage-gated monoatomic ion channel activity / muscle alpha-actinin binding / cation channel complex / regulation of calcium ion import / placenta blood vessel development / cellular response to hydrostatic pressure / outward rectifier potassium channel activity / cellular response to fluid shear stress / non-motile cilium / cellular response to osmotic stress / actinin binding / voltage-gated monoatomic cation channel activity / motile cilium / transcription regulator inhibitor activity / aorta development / determination of left/right symmetry / inorganic cation transmembrane transport / voltage-gated sodium channel activity / neural tube development / ciliary membrane / protein heterotetramerization / branching involved in ureteric bud morphogenesis / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / heart looping / negative regulation of ryanodine-sensitive calcium-release channel activity / cytoplasmic side of endoplasmic reticulum membrane / centrosome duplication / cell surface receptor signaling pathway via JAK-STAT / voltage-gated potassium channel activity / potassium channel activity / embryonic placenta development / voltage-gated calcium channel activity / sodium ion transmembrane transport / monoatomic cation channel activity / cellular response to cAMP / release of sequestered calcium ion into cytosol / cytoskeletal protein binding / potassium ion transmembrane transport / cellular response to calcium ion / liver development / basal plasma membrane / ciliary basal body / establishment of localization in cell / lumenal side of endoplasmic reticulum membrane / phosphoprotein binding / protein tetramerization / calcium ion transmembrane transport / cytoplasmic vesicle membrane / cilium / mitotic spindle / Wnt signaling pathway / intracellular calcium ion homeostasis / cellular response to reactive oxygen species / calcium ion transport / positive regulation of nitric oxide biosynthetic process / cell-cell junction / lamellipodium / heart development / regulation of cell population proliferation / ATPase binding / positive regulation of cytosolic calcium ion concentration / basolateral plasma membrane / protein homotetramerization / transmembrane transporter binding / cell surface receptor signaling pathway / regulation of cell cycle / negative regulation of cell population proliferation / signaling receptor binding / calcium ion binding / endoplasmic reticulum membrane / positive regulation of gene expression / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / extracellular exosome 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: 3.24 Å | ||||||
データ登録者 | Cao, E. / Wang, J. / Decaen, P.G. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2020 タイトル: Molecular dysregulation of ciliary polycystin-2 channels caused by variants in the TOP domain. 著者: Thuy N Vien / Jinliang Wang / Leo C T Ng / Erhu Cao / Paul G DeCaen / 要旨: Genetic variants in which encodes for the polycystin-2 ion channel are responsible for many clinical cases of autosomal dominant polycystic kidney disease (ADPKD). Despite our strong understanding ...Genetic variants in which encodes for the polycystin-2 ion channel are responsible for many clinical cases of autosomal dominant polycystic kidney disease (ADPKD). Despite our strong understanding of the genetic basis of ADPKD, we do not know how most variants impact channel function. Polycystin-2 is found in organelle membranes, including the primary cilium-an antennae-like structure on the luminal side of the collecting duct. In this study, we focus on the structural and mechanistic regulation of polycystin-2 by its TOP domain-a site with unknown function that is commonly altered by missense variants. We use direct cilia electrophysiology, cryogenic electron microscopy, and superresolution imaging to determine that variants of the TOP domain finger 1 motif destabilizes the channel structure and impairs channel opening without altering cilia localization and channel assembly. Our findings support the channelopathy classification of variants associated with ADPKD, where polycystin-2 channel dysregulation in the primary cilia may contribute to cystogenesis. | ||||||
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 | 6wb8.cif.gz | 342.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6wb8.ent.gz | 259.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6wb8.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 | 6wb8_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6wb8_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 6wb8_validation.xml.gz | 57.5 KB | 表示 | |
CIF形式データ | 6wb8_validation.cif.gz | 85.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/wb/6wb8 ftp://data.pdbj.org/pub/pdb/validation_reports/wb/6wb8 | 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: 86517.031 Da / 分子数: 4 / 変異: C331S / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PKD2, TRPP2 / 発現宿主: Homo sapiens (ヒト) / 株 (発現宿主): HEK293S GnTi- / 参照: UniProt: Q13563 #2: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | Y | Has protein modification | 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: PKD2 / タイプ: CELL / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 株: HEK293S |
緩衝液 | pH: 7.4 |
試料 | 濃度: 2 mg/ml / 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: DARK FIELD |
撮影 | 電子線照射量: 1 e/Å2 / フィルム・検出器のモデル: GATAN K2 IS (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.10.1_2155: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.24 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 74302 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | B value: 100 / プロトコル: OTHER / 空間: REAL | ||||||||||||||||||||||||
拘束条件 |
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