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基本情報
登録情報 | データベース: PDB / ID: 6t9n | |||||||||
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タイトル | CryoEM structure of human polycystin-2/PKD2 in UDM supplemented with PI(4,5)P2 | |||||||||
![]() | Polycystin-2 | |||||||||
![]() | MEMBRANE PROTEIN / ION CHANNEL / TRANSIENT RECEPTOR POTENTIAL CHANNEL / POLYCYSTIC KIDNEY DISEASE / Structural Genomics / Structural Genomics Consortium / SGC | |||||||||
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 / HLH domain binding / calcium-induced calcium release activity / 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 / cation channel complex / outward rectifier potassium channel activity / cellular response to osmotic stress / actinin binding / non-motile cilium / determination of left/right symmetry / inorganic cation transmembrane transport / voltage-gated monoatomic cation channel activity / neural tube development / voltage-gated sodium channel activity / aorta development / motile cilium / ciliary membrane / branching involved in ureteric bud morphogenesis / 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 / voltage-gated calcium channel activity / monoatomic cation 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 / cytoplasmic vesicle membrane / basal plasma membrane / cellular response to cAMP / lumenal side of endoplasmic reticulum membrane / cellular response to reactive oxygen species / phosphoprotein binding / protein tetramerization / 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 / calcium ion transport / cell-cell junction / lamellipodium / regulation of cell population proliferation / heart development / ATPase binding / basolateral plasma membrane / protein homotetramerization / transmembrane transporter binding / cell surface receptor signaling pathway / regulation of cell cycle / ciliary basal body / cilium / signaling receptor binding / negative regulation of cell population proliferation / calcium ion binding / endoplasmic reticulum membrane / positive regulation of gene expression / 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 | 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: 2.96 Å | |||||||||
![]() | Wang, Q. / Pike, A.C.W. / Grieben, M. / Baronina, A. / Nasrallah, C. / Shintre, C. / Edwards, A.M. / Arrowsmith, C.H. / Bountra, C. / Carpenter, E.P. / Structural Genomics Consortium (SGC) | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Lipid Interactions of a Ciliary Membrane TRP Channel: Simulation and Structural Studies of Polycystin-2. 著者: Qinrui Wang / Robin A Corey / George Hedger / Prafulla Aryal / Mariana Grieben / Chady Nasrallah / Agnese Baronina / Ashley C W Pike / Jiye Shi / Elisabeth P Carpenter / Mark S P Sansom / ![]() 要旨: Polycystin-2 (PC2) is a transient receptor potential (TRP) channel present in ciliary membranes of the kidney. PC2 shares a transmembrane fold with other TRP channels, in addition to an extracellular ...Polycystin-2 (PC2) is a transient receptor potential (TRP) channel present in ciliary membranes of the kidney. PC2 shares a transmembrane fold with other TRP channels, in addition to an extracellular domain found in TRPP and TRPML channels. Using molecular dynamics (MD) simulations and cryoelectron microscopy we identify and characterize PIP and cholesterol interactions with PC2. PC2 is revealed to have a PIP binding site close to the equivalent vanilloid/lipid binding site in the TRPV1 channel. A 3.0-Å structure reveals a binding site for cholesterol on PC2. Cholesterol interactions with the channel at this site are characterized by MD simulations. The two classes of lipid binding sites are compared with sites observed in other TRPs and in Kv channels. These findings suggest PC2, in common with other ion channels, may be modulated by both PIPs and cholesterol, and position PC2 within an emerging model of the roles of lipids in the regulation and organization of ciliary membranes. | |||||||||
履歴 |
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 378.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 310.1 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 2.9 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 3 MB | 表示 | |
XML形式データ | ![]() | 70.7 KB | 表示 | |
CIF形式データ | ![]() | 100.5 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
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集合体
登録構造単位 | ![]()
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要素
-タンパク質 , 1種, 4分子 ABCD
#1: タンパク質 | 分子量: 63986.668 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q13563 |
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-糖 , 2種, 12分子 
#2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 糖 | ChemComp-NAG / |
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-非ポリマー , 3種, 37分子 




#3: 化合物 | ChemComp-CLR / #5: 化合物 | ChemComp-UMQ / #6: 化合物 | ChemComp-CA / | |
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-詳細
研究の焦点であるリガンドがあるか | N |
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Has protein modification | Y |
-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 |
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試料調製
構成要素 | 名称: POLYCYSTIN-2 CHANNEL TETRAMER / タイプ: ORGANELLE OR CELLULAR COMPONENT 詳細: Detergent (UDM) purified in presence of lipid PI(4,5)P2 Entity ID: #1 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 値: 0.256 MDa / 実験値: NO | |||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | |||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() プラスミド: pFB-CT10HF-LIC | |||||||||||||||||||||||||
緩衝液 | pH: 7.5 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 4.5 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 / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | |||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 278 K |
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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: ![]() |
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): 1000 nm / Cs: 2.7 mm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 8 sec. / 電子線照射量: 52.2 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 1597 |
画像スキャン | 動画フレーム数/画像: 20 / 利用したフレーム数/画像: 1-20 |
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解析
ソフトウェア |
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EMソフトウェア |
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画像処理 | 詳細: Images were corrected for local motion using patch-based methods with MotionCor2 | ||||||||||||||||||||||||||||||||||||||||
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 98113 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.96 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 51694 詳細: RELION autorefinement. Unmasked resolution is 3.12. After masking to remove the detergent micelle resolution is 2.96A クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 85 / プロトコル: AB INITIO MODEL / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 5K47 Accession code: 5K47 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||||||||||
精密化 | 交差検証法: THROUGHOUT | ||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso max: 93.99 Å2 / Biso mean: 35.0255 Å2 / Biso min: 14.07 Å2 | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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