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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9c58 | ||||||||||||||||||||||||||||||||||||||||||
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| タイトル | AP-3 bound to myristoylated Arf1 (Q71L) | ||||||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | TRANSPORT PROTEIN / Adaptor Protein complex / AP-3 / Lysosomal transport / Endosomal transport / Protein trafficking | ||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報synaptic vesicle coating / synaptic vesicle budding from endosome / establishment of protein localization to mitochondrial membrane involved in mitochondrial fission / clathrin-coated vesicle cargo loading, AP-3-mediated / skin epidermis development / AP-type membrane coat adaptor complex / synaptic vesicle membrane organization / zinc ion import into lysosome / AP-3 adaptor complex / neurotransmitter receptor transport, postsynaptic endosome to lysosome ...synaptic vesicle coating / synaptic vesicle budding from endosome / establishment of protein localization to mitochondrial membrane involved in mitochondrial fission / clathrin-coated vesicle cargo loading, AP-3-mediated / skin epidermis development / AP-type membrane coat adaptor complex / synaptic vesicle membrane organization / zinc ion import into lysosome / AP-3 adaptor complex / neurotransmitter receptor transport, postsynaptic endosome to lysosome / anterograde synaptic vesicle transport / microvesicle / endosome to melanosome transport / mitotic cleavage furrow ingression / trans-Golgi Network Vesicle Budding / synaptic vesicle recycling / postsynaptic recycling endosome / Golgi to vacuole transport / clathrin adaptor complex / platelet dense granule organization / Glycosphingolipid transport / melanosome assembly / regulation of receptor internalization / Intra-Golgi traffic / presynaptic endosome / regulation of Arp2/3 complex-mediated actin nucleation / postsynaptic neurotransmitter receptor internalization / granulocyte differentiation / positive regulation of NK T cell differentiation / Synthesis of PIPs at the Golgi membrane / clathrin-coated vesicle membrane / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / protein targeting to vacuole / GTP-dependent protein binding / protein targeting to lysosome / melanosome organization / respiratory system process / anterograde axonal transport / Nef Mediated CD4 Down-regulation / intracellular zinc ion homeostasis / dendritic spine organization / long-term synaptic depression / protein localization to cell surface / protein localization to membrane / COPI-dependent Golgi-to-ER retrograde traffic / lysosome organization / toll-like receptor signaling pathway / Lysosome Vesicle Biogenesis / Golgi Associated Vesicle Biogenesis / lung morphogenesis / Association of TriC/CCT with target proteins during biosynthesis / Synthesis of PIPs at the plasma membrane / cell leading edge / homeostasis of number of cells / intracellular copper ion homeostasis / single fertilization / intracellular transport / hematopoietic progenitor cell differentiation / transport vesicle / COPI-mediated anterograde transport / vesicle-mediated transport / axon cytoplasm / MHC class II antigen presentation / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / cytoplasmic vesicle membrane / sarcomere / small monomeric GTPase / intracellular protein transport / mRNA transcription by RNA polymerase II / cellular response to virus / protein modification process / small GTPase binding / endocytosis / cell morphogenesis / terminal bouton / blood coagulation / Signaling by BRAF and RAF1 fusions / insulin receptor signaling pathway / presynapse / cytoplasmic vesicle / protein phosphatase binding / spermatogenesis / early endosome / lysosome / postsynapse / neuron projection / endosome membrane / postsynaptic density / inflammatory response / Golgi membrane / protein domain specific binding / lysosomal membrane / focal adhesion / intracellular membrane-bounded organelle / GTPase activity / GTP binding / glutamatergic synapse / magnesium ion binding / Golgi apparatus / positive regulation of transcription by RNA polymerase II 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: 4.7 Å | ||||||||||||||||||||||||||||||||||||||||||
| Model details | MODEL GENERATED BY ROSETTA VERSION 2020.08+release.cb1caba | ||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Begley, M.C. / Baker, R.W. | ||||||||||||||||||||||||||||||||||||||||||
| 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: 2024タイトル: A structure-based mechanism for initiation of AP-3 coated vesicle formation. 著者: Matthew Begley / Mahira Aragon / Richard W Baker / ![]() 要旨: Adaptor protein complex-3 (AP-3) mediates cargo sorting from endosomes to lysosomes and lysosome-related organelles. Recently, it was shown that AP-3 adopts a constitutively open conformation ...Adaptor protein complex-3 (AP-3) mediates cargo sorting from endosomes to lysosomes and lysosome-related organelles. Recently, it was shown that AP-3 adopts a constitutively open conformation compared to the related AP-1 and AP-2 coat complexes, which are inactive until undergoing large conformational changes upon membrane recruitment. How AP-3 is regulated is therefore an open question. To understand the mechanism of AP-3 membrane recruitment and activation, we reconstituted human AP-3 and determined multiple structures in the soluble and membrane-bound states using electron cryo-microscopy. Similar to yeast AP-3, human AP-3 is in a constitutively open conformation. To reconstitute AP-3 activation by adenosine di-phosphate (ADP)-ribosylation factor 1 (Arf1), a small guanosine tri-phosphate (GTP)ase, we used lipid nanodiscs to build Arf1-AP-3 complexes on membranes and determined three structures showing the stepwise conformational changes required for formation of AP-3 coated vesicles. First, membrane recruitment is driven by one of two predicted Arf1 binding sites, which flexibly tethers AP-3 to the membrane. Second, cargo binding causes AP-3 to adopt a fixed position and rigidifies the complex, which stabilizes binding for a second Arf1 molecule. Finally, binding of the second Arf1 molecule provides the template for AP-3 dimerization, providing a glimpse into the first step of coat polymerization. We propose coat polymerization only occurs after cargo engagement, thereby linking cargo sorting with assembly of higher-order coat structures. Additionally, we provide evidence for two amphipathic helices in AP-3, suggesting that AP-3 contributes to membrane deformation during coat assembly. In total, these data provide evidence for the first stages of AP-3-mediated vesicle coat assembly. | ||||||||||||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9c58.cif.gz | 246.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9c58.ent.gz | 162.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9c58.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 | 9c58_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9c58_full_validation.pdf.gz | 1.3 MB | 表示 | |
| XML形式データ | 9c58_validation.xml.gz | 48.3 KB | 表示 | |
| CIF形式データ | 9c58_validation.cif.gz | 76.8 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/c5/9c58 ftp://data.pdbj.org/pub/pdb/validation_reports/c5/9c58 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 45207MC ![]() 9c59C ![]() 9c5aC ![]() 9c5bC ![]() 9c5cC 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 F&H 検索 |
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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
-AP-3 complex subunit ... , 4種, 4分子 DBMS
| #1: タンパク質 | 分子量: 69381.977 Da / 分子数: 1 / 断片: residues 1-617 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: AP3D1, PRO0039 / 発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 76499.609 Da / 分子数: 1 / 断片: residues 1-677 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: AP3B1, ADTB3A / 発現宿主: ![]() |
| #3: タンパク質 | 分子量: 46989.965 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: AP3M1 / 発現宿主: ![]() |
| #4: タンパク質 | 分子量: 21755.061 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: AP3S1, CLAPS3 / 発現宿主: ![]() |
-タンパク質 , 1種, 1分子 A
| #5: タンパク質 | 分子量: 20775.812 Da / 分子数: 1 / Mutation: Q71L / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ARF1 / 発現宿主: ![]() |
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-非ポリマー , 2種, 2分子 


| #6: 化合物 | ChemComp-MG / |
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| #7: 化合物 | ChemComp-GTP / |
-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| Has protein modification | N |
-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: AP-3 bound to myristoylated Arf1 (Q71L) / タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT | ||||||||||||||||||||||||||||||
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| 分子量 | 値: 0.240 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||||||||
| 由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||||||||||||
| 緩衝液 | pH: 7.4 / 詳細: 1x PBS (pH 7.4), 300mM NaCl, 1mM TCEP | ||||||||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 1.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Specimen appeared as a monodisperse peak via size exclusion chromatography (SEC) | ||||||||||||||||||||||||||||||
| 試料支持 | 詳細: Used Quantifoil Active grids - backside gold coated before plasma cleaning. 12 mA used for plasma cleaning. 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: SPOTITON / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 296 K / 詳細: Commercialized version - Chameleon |
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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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 1400 nm / 最小 デフォーカス(公称値): 400 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 | 電子線照射量: 49.97 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 詳細: 4 datasets collected, processed independently, and merged. |
| 電子光学装置 | エネルギーフィルター名称: TFS Selectris / エネルギーフィルタースリット幅: 20 eV |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 詳細: Mixture of blob picker, template picker, crYOLO, and Topaz | ||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 4.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 285082 / 詳細: NU refinement in cryoSPARC / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | Source name: AlphaFold / タイプ: in silico model |
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万見について




Homo sapiens (ヒト)
米国, 1件
引用











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FIELD EMISSION GUN