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基本情報
登録情報 | データベース: PDB / ID: 8hk7 | |||||||||||||||||||||||||||||||||
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タイトル | Structure of PKD2-F604P (Polycystin-2, TRPP2) with ML-SA1 | |||||||||||||||||||||||||||||||||
![]() | Polycystin-2 | |||||||||||||||||||||||||||||||||
![]() | MEMBRANE 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 / HLH domain binding / metanephric ascending thin limb development / metanephric mesenchyme development / metanephric S-shaped body morphogenesis / basal cortex / renal artery morphogenesis / positive regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity / 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 / cation channel complex / cellular response to fluid shear stress / outward rectifier potassium channel activity / actinin binding / cellular response to osmotic stress / non-motile cilium / determination of left/right symmetry / inorganic cation transmembrane transport / voltage-gated monoatomic cation channel activity / aorta development / neural tube development / motile cilium / voltage-gated sodium channel activity / ciliary membrane / branching involved in ureteric bud morphogenesis / protein heterotetramerization / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / cytoplasmic side of endoplasmic reticulum membrane / heart looping / centrosome duplication / voltage-gated potassium channel activity / cell surface receptor signaling pathway via JAK-STAT / potassium channel activity / embryonic placenta development / voltage-gated calcium channel activity / transcription regulator inhibitor activity / monoatomic cation channel activity / cytoskeletal protein binding / cellular response to cAMP / release of sequestered calcium ion into cytosol / potassium ion transmembrane transport / sodium ion transmembrane transport / cytoplasmic vesicle membrane / cellular response to calcium ion / liver development / basal plasma membrane / lumenal side of endoplasmic reticulum membrane / cellular response to reactive oxygen species / establishment of localization in cell / phosphoprotein binding / protein tetramerization / calcium ion transmembrane transport / Wnt signaling pathway / intracellular calcium ion homeostasis / calcium ion transport / mitotic spindle / positive regulation of nitric oxide biosynthetic process / cell-cell junction / lamellipodium / regulation of cell population proliferation / heart development / 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 / ciliary basal body / cilium / 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 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: 3 Å | |||||||||||||||||||||||||||||||||
![]() | Chen, M.Y. / Su, Q. / Wang, Z.F. / Yu, Y. | |||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Molecular and structural basis of the dual regulation of the polycystin-2 ion channel by small-molecule ligands. 著者: Zhifei Wang / Mengying Chen / Qiang Su / Tiago D C Morais / Yan Wang / Elianna Nazginov / Akhilraj R Pillai / Feng Qian / Yigong Shi / Yong Yu / ![]() ![]() 要旨: Mutations in the gene, which encodes the polycystin-2 (PC2, also called TRPP2) protein, lead to autosomal dominant polycystic kidney disease (ADPKD). As a member of the transient receptor potential ...Mutations in the gene, which encodes the polycystin-2 (PC2, also called TRPP2) protein, lead to autosomal dominant polycystic kidney disease (ADPKD). As a member of the transient receptor potential (TRP) channel superfamily, PC2 functions as a non-selective cation channel. The activation and regulation of the PC2 channel are largely unknown, and direct binding of small-molecule ligands to this channel has not been reported. In this work, we found that most known small-molecule agonists of the mucolipin TRP (TRPML) channels inhibit the activity of the PC2_F604P, a gain-of-function mutant of the PC2 channel. However, two of them, ML-SA1 and SF-51, have dual regulatory effects, with low concentration further activating PC2_F604P, and high concentration leading to inactivation of the channel. With two cryo-electron microscopy (cryo-EM) structures, a molecular docking model, and mutagenesis results, we identified two distinct binding sites of ML-SA1 in PC2_F604P that are responsible for activation and inactivation, respectively. These results provide structural and functional insights into how ligands regulate PC2 channel function through unusual mechanisms and may help design compounds that are more efficient and specific in regulating the PC2 channel and potentially also for ADPKD treatment. | |||||||||||||||||||||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 353.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 288.3 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 34848MC ![]() 8k3sC 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 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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
#1: タンパク質 | 分子量: 66029.828 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: 糖 | ChemComp-NAG / #3: 化合物 | ChemComp-CA / | #4: 化合物 | ChemComp-AQV / 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 |
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試料調製
構成要素 | 名称: Structure of PKD2-F604P (Polycystin-2, TRPP2) with ML-SA1 タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.5 |
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 |
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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): 2000 nm / 最小 デフォーカス(公称値): 1400 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 163172 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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