+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 7t5q | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | Cryo-EM Structure of a Transition State of Arp2/3 Complex Activation | ||||||||||||
要素 |
| ||||||||||||
キーワード | CONTRACTILE PROTEIN / actin / ATPase / actin related protein / arp / cytoskeleton / Arp2-3 complex / actin nucleation / actin branching / CapZ | ||||||||||||
| 機能・相同性 | 機能・相同性情報negative regulation of membrane tubulation / spindle localization / membrane invagination / plasma membrane tubulation / muscle cell projection membrane / EPHB-mediated forward signaling / Regulation of actin dynamics for phagocytic cup formation / RHO GTPases Activate WASPs and WAVEs / postsynaptic actin cytoskeleton organization / Arp2/3 protein complex ...negative regulation of membrane tubulation / spindle localization / membrane invagination / plasma membrane tubulation / muscle cell projection membrane / EPHB-mediated forward signaling / Regulation of actin dynamics for phagocytic cup formation / RHO GTPases Activate WASPs and WAVEs / postsynaptic actin cytoskeleton organization / Arp2/3 protein complex / negative regulation of lymphocyte migration / actin nucleation / Arp2/3 complex-mediated actin nucleation / positive regulation of clathrin-dependent endocytosis / vesicle transport along actin filament / F-actin capping protein complex / WASH complex / regulation of cell projection assembly / actin cap / postsynapse organization / vesicle organization / regulation of actin filament polymerization / Clathrin-mediated endocytosis / vesicle budding from membrane / cell junction assembly / dendritic spine morphogenesis / positive regulation of chemotaxis / barbed-end actin filament capping / actin polymerization or depolymerization / RHOD GTPase cycle / regulation of cell morphogenesis / RHOF GTPase cycle / regulation of postsynapse organization / COPI-independent Golgi-to-ER retrograde traffic / positive regulation of filopodium assembly / Neutrophil degranulation / protein-containing complex localization / lamellipodium assembly / Sensory processing of sound by inner hair cells of the cochlea / cytoskeletal motor activator activity / myosin heavy chain binding / tropomyosin binding / actin filament bundle / troponin I binding / filamentous actin / mesenchyme migration / positive regulation of actin filament polymerization / cortical cytoskeleton / cell leading edge / skeletal muscle myofibril / brush border / Advanced glycosylation endproduct receptor signaling / actin filament bundle assembly / striated muscle thin filament / skeletal muscle thin filament assembly / cilium assembly / actin monomer binding / sperm head-tail coupling apparatus / positive regulation of double-strand break repair via homologous recombination / positive regulation of lamellipodium assembly / COPI-mediated anterograde transport / skeletal muscle fiber development / cytoskeletal protein binding / cell projection / stress fiber / titin binding / actin filament polymerization / positive regulation of substrate adhesion-dependent cell spreading / cytoskeleton organization / MHC class II antigen presentation / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / hippocampal mossy fiber to CA3 synapse / sarcomere / response to bacterium / filopodium / actin filament / structural constituent of cytoskeleton / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / Schaffer collateral - CA1 synapse / calcium-dependent protein binding / actin filament binding / cell migration / regulation of protein localization / lamellipodium / synaptic vesicle membrane / actin cytoskeleton / site of double-strand break / Factors involved in megakaryocyte development and platelet production / actin binding / actin cytoskeleton organization / cell body / protein-containing complex assembly / cytoplasmic vesicle / cell cortex / cytoskeleton / protein-macromolecule adaptor activity / endosome / neuron projection / postsynaptic density 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: 3.4 Å | ||||||||||||
データ登録者 | Rebowski, G. / van Eeuwen, T. / Boczkowska, M. / Dominguez, R. | ||||||||||||
| 資金援助 | 米国, 3件
| ||||||||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2023タイトル: Transition State of Arp2/3 Complex Activation by Actin-Bound Dimeric Nucleation-Promoting Factor. 著者: Trevor van Eeuwen / Malgorzata Boczkowska / Grzegorz Rebowski / Peter J Carman / Fred E Fregoso / Roberto Dominguez / ![]() 要旨: Arp2/3 complex generates branched actin networks that drive fundamental processes such as cell motility and cytokinesis. The complex comprises seven proteins, including actin-related proteins (Arps) ...Arp2/3 complex generates branched actin networks that drive fundamental processes such as cell motility and cytokinesis. The complex comprises seven proteins, including actin-related proteins (Arps) 2 and 3 and five scaffolding proteins (ArpC1-ArpC5) that mediate interactions with a pre-existing (mother) actin filament at the branch junction. Arp2/3 complex exists in two main conformations, inactive with the Arps interacting end-to-end and active with the Arps interacting side-by-side like subunits of the short-pitch helix of the actin filament. Several cofactors drive the transition toward the active state, including ATP binding to the Arps, WASP-family nucleation-promoting factors (NPFs), actin monomers, and binding of Arp2/3 complex to the mother filament. The precise contribution of each cofactor to activation is poorly understood. We report the 3.32-Å resolution cryo-electron microscopy structure of a transition state of Arp2/3 complex activation with bound constitutively dimeric NPF. Arp2/3 complex-binding region of the NPF N-WASP was fused C-terminally to the α and β subunits of the CapZ heterodimer. One arm of the NPF dimer binds Arp2 and the other binds actin and Arp3. The conformation of the complex is intermediate between those of inactive and active Arp2/3 complex. Arp2, Arp3, and actin also adopt intermediate conformations between monomeric (G-actin) and filamentous (F-actin) states, but only actin hydrolyzes ATP. In solution, the transition complex is kinetically shifted toward the short-pitch conformation and has higher affinity for F-actin than inactive Arp2/3 complex. The results reveal how all the activating cofactors contribute in a coordinated manner toward Arp2/3 complex activation. | ||||||||||||
| 履歴 |
|
-
構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
|---|
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 7t5q.cif.gz | 554.9 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb7t5q.ent.gz | 438.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7t5q.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/t5/7t5q ftp://data.pdbj.org/pub/pdb/validation_reports/t5/7t5q | HTTPS FTP |
|---|
-関連構造データ
| 関連構造データ | ![]() 25707MC 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 ( |
|---|---|
| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
-Actin-related protein ... , 7種, 7分子 ABCDEFG
| #1: タンパク質 | 分子量: 47428.031 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
|---|---|
| #2: タンパク質 | 分子量: 44818.711 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
| #3: タンパク質 | 分子量: 41594.238 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
| #4: タンパク質 | 分子量: 34402.043 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
| #5: タンパク質 | 分子量: 20572.666 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
| #6: タンパク質 | 分子量: 19697.047 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
| #7: タンパク質 | 分子量: 16251.308 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
-タンパク質 , 1種, 1分子 H
| #8: タンパク質 | 分子量: 41875.633 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
|---|
-F-actin-capping protein subunit ... , 2種, 2分子 IJ
| #9: タンパク質 | 分子量: 39600.566 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Homo sapiens (ヒト), (組換発現) ![]() 遺伝子: CAPZA1, Wasl / 発現宿主: ![]() |
|---|---|
| #10: タンパク質 | 分子量: 37470.754 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Homo sapiens (ヒト), (組換発現) ![]() 遺伝子: CAPZB, Wasl / 発現宿主: ![]() |
-非ポリマー , 3種, 6分子 




| #11: 化合物 | | #12: 化合物 | #13: 化合物 | ChemComp-ADP / | |
|---|
-詳細
| 研究の焦点であるリガンドがあるか | N |
|---|---|
| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
-
試料調製
| 構成要素 |
| |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 分子量 | 値: 0.2489 MDa / 実験値: NO | |||||||||||||||||||||||||||||||||||
| 由来(天然) |
| |||||||||||||||||||||||||||||||||||
| 由来(組換発現) |
| |||||||||||||||||||||||||||||||||||
| 緩衝液 | pH: 7 | |||||||||||||||||||||||||||||||||||
| 緩衝液成分 |
| |||||||||||||||||||||||||||||||||||
| 試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: This sample was monodisperse. | |||||||||||||||||||||||||||||||||||
| 急速凍結 | 装置: LEICA EM CPC / 凍結剤: ETHANE 詳細: Grids were manually blotted for 3 seconds with Whatman 41 filter paper and manually plunged using a Leica EM CPC manual plunger. |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: FEI TITAN KRIOS 詳細: Data were collected in super-resolution mode with an illuminated area of 1.01 um, nominal dose of 40 e-/A^2, a dose rate of 4.87 e-/s/pixel, and 2 or 5 exposures per hole by image shift. |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: SPOT SCAN |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 165000 X / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / 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: 2.6 sec. / 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 9661 |
| 電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
| 画像スキャン | 横: 5760 / 縦: 4092 / 動画フレーム数/画像: 40 / 利用したフレーム数/画像: 1-40 |
-
解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / 分類: 精密化 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMソフトウェア |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 画像処理 | 詳細: Super resolution mode; micrographs binned during motion correction | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CTF補正 | 詳細: CTF correction was done in cryoSPARC for intial 2D classification and then repeated in CTFFIND4 (Relion) for classification and final reconstruction. タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 4485066 / 詳細: Particles autopicked in cryoSPARC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 269760 / アルゴリズム: FOURIER SPACE / 詳細: Composite map after multibody refinement / 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: 132 / プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: correlation | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 4JD2 Accession code: 4JD2 / Source name: PDB / タイプ: experimental model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
|
ムービー
コントローラー
万見について




Homo sapiens (ヒト)

米国, 3件
引用
PDBj




























FIELD EMISSION GUN
