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-基本情報
登録情報 | データベース: PDB / ID: 6bjc | ||||||||||||||||||
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タイトル | TPX2_mini decorated GMPCPP-microtubule | ||||||||||||||||||
要素 |
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キーワード | CELL CYCLE (細胞周期) / mitosis (有糸分裂) / GanGTP / nucleation (核生成) | ||||||||||||||||||
機能・相同性 | 機能・相同性情報 microtubule nucleation / negative regulation of microtubule depolymerization / axon hillock / importin-alpha family protein binding / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin ...microtubule nucleation / negative regulation of microtubule depolymerization / axon hillock / importin-alpha family protein binding / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / Recruitment of NuMA to mitotic centrosomes / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / COPI-independent Golgi-to-ER retrograde traffic / MHC class II antigen presentation / COPI-mediated anterograde transport / 細胞結合 / activation of protein kinase activity / mitotic spindle assembly / regulation of mitotic spindle organization / AURKA Activation by TPX2 / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / structural constituent of cytoskeleton / 紡錘体 / spindle / microtubule cytoskeleton organization / 紡錘体 / microtubule cytoskeleton / mitotic cell cycle / Regulation of TP53 Activity through Phosphorylation / 微小管 / molecular adaptor activity / 細胞分裂 / GTPase activity / apoptotic process / GTP binding / protein kinase binding / 核質 / metal ion binding / 細胞核 / 細胞質基質 / 細胞質 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | Homo sapiens (ヒト) Sus scrofa (ブタ) | ||||||||||||||||||
手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.3 Å | ||||||||||||||||||
データ登録者 | Zhang, R. / Nogales, E. | ||||||||||||||||||
資金援助 | 米国, 英国, 5件
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引用 | ジャーナル: Elife / 年: 2017 タイトル: Structural insight into TPX2-stimulated microtubule assembly. 著者: Rui Zhang / Johanna Roostalu / Thomas Surrey / Eva Nogales / 要旨: During mitosis and meiosis, microtubule (MT) assembly is locally upregulated by the chromatin-dependent Ran-GTP pathway. One of its key targets is the MT-associated spindle assembly factor TPX2. The ...During mitosis and meiosis, microtubule (MT) assembly is locally upregulated by the chromatin-dependent Ran-GTP pathway. One of its key targets is the MT-associated spindle assembly factor TPX2. The molecular mechanism of how TPX2 stimulates MT assembly remains unknown because structural information about the interaction of TPX2 with MTs is lacking. Here, we determine the cryo-electron microscopy structure of a central region of TPX2 bound to the MT surface. TPX2 uses two flexibly linked elements ('ridge' and 'wedge') in a novel interaction mode to simultaneously bind across longitudinal and lateral tubulin interfaces. These MT-interacting elements overlap with the binding site of importins on TPX2. Fluorescence microscopy-based in vitro reconstitution assays reveal that this interaction mode is critical for MT binding and facilitates MT nucleation. Together, our results suggest a molecular mechanism of how the Ran-GTP gradient can regulate TPX2-dependent MT formation. | ||||||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6bjc.cif.gz | 1 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6bjc.ent.gz | 822.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6bjc.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/bj/6bjc ftp://data.pdbj.org/pub/pdb/validation_reports/bj/6bjc | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
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非結晶学的対称性 (NCS) | NCSドメイン:
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