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基本情報
登録情報 | データベース: EMDB / ID: EMD-21586 | |||||||||
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タイトル | Cryo-EM structure of PKD2 C331S disease variant | |||||||||
![]() | Sharpened map | |||||||||
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![]() | PKD2 / TRANSPORT PROTEIN | |||||||||
機能・相同性 | ![]() 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 / renal tubule morphogenesis ...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 / renal tubule morphogenesis / determination of liver left/right asymmetry / metanephric ascending thin limb development / metanephric mesenchyme development / metanephric S-shaped body morphogenesis / basal cortex / renal artery morphogenesis / calcium-induced calcium release activity / HLH domain binding / migrasome / cilium organization / VxPx cargo-targeting to cilium / detection of mechanical stimulus / muscle alpha-actinin binding / regulation of calcium ion import / voltage-gated monoatomic ion channel activity / placenta blood vessel development / cellular response to hydrostatic pressure / cellular response to fluid shear stress / outward rectifier potassium channel activity / cation channel complex / non-motile cilium / actinin binding / cellular response to osmotic stress / determination of left/right symmetry / : / voltage-gated monoatomic cation channel activity / neural tube development / voltage-gated sodium channel activity / aorta development / motile cilium / branching involved in ureteric bud morphogenesis / ciliary membrane / protein heterotetramerization / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / heart looping / positive regulation of phospholipase C-activating G protein-coupled receptor signaling pathway / cytoplasmic side of endoplasmic reticulum membrane / centrosome duplication / voltage-gated potassium channel activity / potassium channel activity / cell surface receptor signaling pathway via JAK-STAT / embryonic placenta development / monoatomic cation channel activity / voltage-gated calcium channel activity / transcription regulator inhibitor activity / cytoskeletal protein binding / release of sequestered calcium ion into cytosol / potassium ion transmembrane transport / sodium ion transmembrane transport / cellular response to calcium ion / basal plasma membrane / cytoplasmic vesicle membrane / cellular response to cAMP / lumenal side of endoplasmic reticulum membrane / cellular response to reactive oxygen species / protein tetramerization / phosphoprotein binding / establishment of localization in cell / liver development / calcium ion transmembrane transport / Wnt signaling pathway / intracellular calcium ion homeostasis / positive regulation of nitric oxide biosynthetic process / mitotic spindle / cell-cell junction / calcium ion transport / lamellipodium / regulation of cell population proliferation / heart development / ATPase binding / protein homotetramerization / basolateral plasma membrane / transmembrane transporter binding / cell surface receptor signaling pathway / regulation of cell cycle / cilium / ciliary basal body / signaling receptor binding / negative regulation of cell population proliferation / calcium ion binding / positive regulation of gene expression / endoplasmic reticulum membrane / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / extracellular exosome / identical protein binding / membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.24 Å | |||||||||
![]() | Cao E / Wang J | |||||||||
資金援助 | ![]()
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![]() | ![]() 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. | |||||||||
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
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マップデータ | ![]() | 4.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 18 KB 18 KB | 表示 表示 | ![]() |
画像 | ![]() | 80.2 KB | ||
Filedesc metadata | ![]() | 6.5 KB | ||
その他 | ![]() | 26.3 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 400.2 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 399.8 KB | 表示 | |
XML形式データ | ![]() | 5.9 KB | 表示 | |
CIF形式データ | ![]() | 6.7 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Sharpened map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.05 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-追加マップ: Unsharpened map
ファイル | emd_21586_additional.map | ||||||||||||
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注釈 | Unsharpened map | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : PKD2
全体 | 名称: PKD2 |
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要素 |
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-超分子 #1: PKD2
超分子 | 名称: PKD2 / タイプ: cell / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Polycystin-2
分子 | 名称: Polycystin-2 / タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 86.517031 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: GMGSAAPGGL CEQRGLEIEM QRIRQAAARD PPAGAAASPS PPLSSCSRQA WSRDNPGFEA EEEEEEVEGE EGGMVVEMDV EWRPGSRRS AASSAVSSVG ARSRGLGGYH GAGHPSGRRR RREDQGPPCP SPVGGGDPLH RHLPLEGQPP RVAWAERLVR G LRGLWGTR ...文字列: GMGSAAPGGL CEQRGLEIEM QRIRQAAARD PPAGAAASPS PPLSSCSRQA WSRDNPGFEA EEEEEEVEGE EGGMVVEMDV EWRPGSRRS AASSAVSSVG ARSRGLGGYH GAGHPSGRRR RREDQGPPCP SPVGGGDPLH RHLPLEGQPP RVAWAERLVR G LRGLWGTR LMEESSTNRE KYLKSVLREL VTYLLFLIVL CILTYGMMSS NVYYYTRMMS QLFLDTPVSK TEKTNFKTLS SM EDFWKFT EGSLLDGLYW KMQPSNQTEA DNRSFIFYEN LLLGVPRIRQ LRVRNGSSSI PQDLRDEIKE CYDVYSVSSE DRA PFGPRN GTAWIYTSEK DLNGSSHWGI IATYSGAGYY LDLSRTREET AAQVASLKKN VWLDRGTRAT FIDFSVYNAN INLF CVVRL LVEFPATGGV IPSWQFQPLK LIRYVTTFDF FLAACEIIFC FFIFYYVVEE ILEIRIHKLH YFRSFWNCLD VVIVV LSVV AIGINIYRTS NVEVLLQFLE DQNTFPNFEH LAYWQIQFNN IAAVTVFFVW IKLFKFINFN RTMSQLSTTM SRCAKD LFG FAIMFFIIFL AYAQLAYLVF GTQVDDFSTF QECIFTQFRI ILGDINFAEI EEANRVLGPI YFTTFVFFMF FILLNMF LA IINDTYSEVK SDLAQQKAEM ELSDLIRKGY HKALVKLKLK KNTVDDISES LRQGGGKLNF DELRQDLKGK GHTDAEIE A IFTKYDQDGD QELTEHEHQQ MRDDLEKERE DLDLD UniProtKB: Polycystin-2 |
-分子 #2: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 2 / コピー数: 12 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 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 | 2 mg/mL |
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緩衝液 | pH: 7.4 |
凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 IS (4k x 4k) / 平均電子線量: 1.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: DARK FIELD |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: OTHER / 温度因子: 100 |
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得られたモデル | ![]() PDB-6wb8: |