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基本情報
登録情報 | データベース: PDB / ID: 6yah | |||||||||
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タイトル | AP2 in clathrin coats assembled on a membrane containing dileucine- and tyrosine-based cargo peptides | |||||||||
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![]() | ENDOCYTOSIS / clathrin / clathrin adaptor / ap2 / clathrin assembly | |||||||||
機能・相同性 | ![]() Gap junction degradation / Formation of annular gap junctions / LDL clearance / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / WNT5A-dependent internalization of FZD4 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / Retrograde neurotrophin signalling / Nef Mediated CD8 Down-regulation / Trafficking of GluR2-containing AMPA receptors ...Gap junction degradation / Formation of annular gap junctions / LDL clearance / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / WNT5A-dependent internalization of FZD4 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / Retrograde neurotrophin signalling / Nef Mediated CD8 Down-regulation / Trafficking of GluR2-containing AMPA receptors / VLDLR internalisation and degradation / Retrograde neurotrophin signalling / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / Trafficking of GluR2-containing AMPA receptors / WNT5A-dependent internalization of FZD4 / VLDLR internalisation and degradation / extrinsic component of presynaptic endocytic zone membrane / clathrin adaptor complex / WNT5A-dependent internalization of FZD4 / Recycling pathway of L1 / MHC class II antigen presentation / AP-2 adaptor complex / regulation of vesicle size / postsynaptic neurotransmitter receptor internalization / Cargo recognition for clathrin-mediated endocytosis / Recycling pathway of L1 / Retrograde neurotrophin signalling / clathrin-coated endocytic vesicle / Clathrin-mediated endocytosis / positive regulation of synaptic vesicle endocytosis / Cargo recognition for clathrin-mediated endocytosis / clathrin adaptor activity / Clathrin-mediated endocytosis / LDL clearance / membrane coat / vesicle budding from membrane / clathrin-dependent endocytosis / MHC class II antigen presentation / signal sequence binding / coronary vasculature development / Nef Mediated CD4 Down-regulation / endolysosome membrane / aorta development / ventricular septum development / Neutrophil degranulation / clathrin binding / low-density lipoprotein particle receptor binding / Trafficking of GluR2-containing AMPA receptors / Recycling pathway of L1 / positive regulation of receptor internalization / synaptic vesicle endocytosis / EPH-ephrin mediated repulsion of cells / negative regulation of protein localization to plasma membrane / vesicle-mediated transport / clathrin-coated pit / protein serine/threonine kinase binding / phosphatidylinositol binding / MHC class II antigen presentation / VLDLR internalisation and degradation / kidney development / intracellular protein transport / clathrin-coated endocytic vesicle membrane / terminal bouton / receptor internalization / cytoplasmic side of plasma membrane / kinase binding / disordered domain specific binding / endocytic vesicle membrane / synaptic vesicle / Cargo recognition for clathrin-mediated endocytosis / presynapse / Clathrin-mediated endocytosis / protein-containing complex assembly / cytoplasmic vesicle / Potential therapeutics for SARS / transmembrane transporter binding / postsynapse / protein domain specific binding / synapse / lipid binding / protein-containing complex binding / protein kinase binding / glutamatergic synapse / membrane / plasma membrane / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() ![]() | |||||||||
手法 | 電子顕微鏡法 / サブトモグラム平均法 / クライオ電子顕微鏡法 / 解像度: 10.2 Å | |||||||||
![]() | Kovtun, O. / Kane Dickson, V. / Kelly, B.T. / Owen, D. / Briggs, J.A.G. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Architecture of the AP2/clathrin coat on the membranes of clathrin-coated vesicles. 著者: Oleksiy Kovtun / Veronica Kane Dickson / Bernard T Kelly / David J Owen / John A G Briggs / ![]() ![]() 要旨: Clathrin-mediated endocytosis (CME) is crucial for modulating the protein composition of a cell's plasma membrane. Clathrin forms a cage-like, polyhedral outer scaffold around a vesicle, to which ...Clathrin-mediated endocytosis (CME) is crucial for modulating the protein composition of a cell's plasma membrane. Clathrin forms a cage-like, polyhedral outer scaffold around a vesicle, to which cargo-selecting clathrin adaptors are attached. Adaptor protein complex (AP2) is the key adaptor in CME. Crystallography has shown AP2 to adopt a range of conformations. Here, we used cryo-electron microscopy, tomography, and subtomogram averaging to determine structures, interactions, and arrangements of clathrin and AP2 at the key steps of coat assembly, from AP2 in solution to membrane-assembled clathrin-coated vesicles (CCVs). AP2 binds cargo and PtdIns(4,5) (phosphatidylinositol 4,5-bisphosphate)-containing membranes via multiple interfaces, undergoing conformational rearrangement from its cytosolic state. The binding mode of AP2 β2 appendage into the clathrin lattice in CCVs and buds implies how the adaptor structurally modulates coat curvature and coat disassembly. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 322.3 KB | 表示 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-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
#1: タンパク質 | 分子量: 70310.062 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 105619.344 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#3: タンパク質 | 分子量: 51044.113 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#4: タンパク質 | 分子量: 17038.688 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
-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: 3D ARRAY / 3次元再構成法: サブトモグラム平均法 |
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試料調製
構成要素 |
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分子量 | 単位: MEGADALTONS / 実験値: NO | |||||||||||||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.2 | |||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample (in vitro budding reaction) contained AP2, clathrin and 400 nm extruded liposomes | |||||||||||||||||||||||||||||||||||
試料支持 | グリッドのタイプ: C-flat-2/2 | |||||||||||||||||||||||||||||||||||
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 98 % / 凍結前の試料温度: 291 K 詳細: The sample was supplemented with 10 nm nanogold fiducials, and 3 ul of the mixture was backside blotted for 3 seconds. |
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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 / 倍率(公称値): 81000 X / 倍率(補正後): 81000 X / 最大 デフォーカス(公称値): 6500 nm / 最小 デフォーカス(公称値): 1500 nm / Calibrated defocus min: 1500 nm / 最大 デフォーカス(補正後): 6500 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: ZEMLIN TABLEAU |
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: 0.2 sec. / 電子線照射量: 3.2 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) 撮影したグリッド数: 2 詳細: The images were collected in movie mode at 10 frames per second |
電子光学装置 | エネルギーフィルター名称: GIF Quantum LS / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 横: 3838 / 縦: 3710 / 動画フレーム数/画像: 10 / 利用したフレーム数/画像: 1-10 |
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解析
EMソフトウェア |
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画像処理 | 詳細: The images were low pass filtered according to the cumulative radiation dose. | ||||||||||||||||||||||||||||||||||||||||||||
CTF補正 | 詳細: CTF correction in novaCTF with by multiplication / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 10.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 27630 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
EM volume selection | 手法: geometrically defined initial positions on membrane strctures Num. of tomograms: 29139 / Num. of volumes extracted: 292224 / Reference model: reference-free | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: correlation coefficient | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 1XA7 Accession code: 1XA7 / Source name: PDB / タイプ: experimental model |