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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: 9i8h | |||||||||||||||
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| タイトル | Outwards conformation' of the human gamma-TuRC from purified centrosomes obtained by rigid body docking | |||||||||||||||
要素 |
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キーワード | CELL CYCLE / centrosome / cytoskeleton / microtubule / microtubule nucleation / complex / template / cap / gamma-tubulin / gamma-tubulin ring complex / nedd1 / neural precursor cell-expressed developmentally down-regulated 1 / CDK5RAP2 / cyclin-dependent kinase 5 regulatory subunit associated protein 2 | |||||||||||||||
| 機能・相同性 | 機能・相同性情報microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / positive regulation of norepinephrine uptake / polar microtubule / interphase microtubule organizing center / gamma-tubulin complex / gamma-tubulin ring complex / cellular response to cytochalasin B / bBAF complex ...microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / positive regulation of norepinephrine uptake / polar microtubule / interphase microtubule organizing center / gamma-tubulin complex / gamma-tubulin ring complex / cellular response to cytochalasin B / bBAF complex / mitotic spindle microtubule / npBAF complex / nBAF complex / brahma complex / meiotic spindle organization / regulation of transepithelial transport / Formation of annular gap junctions / morphogenesis of a polarized epithelium / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / Gap junction degradation / GBAF complex / Folding of actin by CCT/TriC / regulation of G0 to G1 transition / protein localization to adherens junction / Cell-extracellular matrix interactions / microtubule nucleation / dense body / postsynaptic actin cytoskeleton / Tat protein binding / gamma-tubulin binding / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / regulation of double-strand break repair / regulation of nucleotide-excision repair / non-motile cilium / Adherens junctions interactions / RHOF GTPase cycle / adherens junction assembly / apical protein localization / Sensory processing of sound by outer hair cells of the cochlea / Interaction between L1 and Ankyrins / tight junction / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / Sensory processing of sound by inner hair cells of the cochlea / positive regulation of T cell differentiation / apical junction complex / positive regulation of double-strand break repair / regulation of norepinephrine uptake / transporter regulator activity / maintenance of blood-brain barrier / nitric-oxide synthase binding / cortical cytoskeleton / NuA4 histone acetyltransferase complex / establishment or maintenance of cell polarity / pericentriolar material / positive regulation of stem cell population maintenance / cell leading edge / Regulation of MITF-M-dependent genes involved in pigmentation / Recycling pathway of L1 / microtubule organizing center / brush border / mitotic sister chromatid segregation / regulation of G1/S transition of mitotic cell cycle / EPH-ephrin mediated repulsion of cells / kinesin binding / negative regulation of cell differentiation / mitotic spindle assembly / RHO GTPases Activate WASPs and WAVEs / regulation of synaptic vesicle endocytosis / positive regulation of myoblast differentiation / single fertilization / RHO GTPases activate IQGAPs / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / spindle assembly / cytoplasmic microtubule / cytoplasmic microtubule organization / EPHB-mediated forward signaling / cytoskeleton organization / centriole / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / substantia nigra development / Recruitment of mitotic centrosome proteins and complexes / Recruitment of NuMA to mitotic centrosomes / axonogenesis / Anchoring of the basal body to the plasma membrane / calyx of Held / AURKA Activation by TPX2 / nitric-oxide synthase regulator activity / condensed nuclear chromosome / mitotic spindle organization / meiotic cell cycle / Translocation of SLC2A4 (GLUT4) to the plasma membrane / FCGR3A-mediated phagocytosis / actin filament / adherens junction / positive regulation of cell differentiation 類似検索 - 分子機能 | |||||||||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||||||||
| 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: 23.2 Å | |||||||||||||||
データ登録者 | Hofer, F.W. / Pfeffer, S. | |||||||||||||||
| 資金援助 | ドイツ, 4件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural mechanisms for centrosomal recruitment and organization of the microtubule nucleator γ-TuRC. 著者: Qi Gao / Florian W Hofer / Sebastian Filbeck / Bram J A Vermeulen / Martin Würtz / Annett Neuner / Charlotte Kaplan / Maja Zezlina / Cornelia Sala / Hyesu Shin / Oliver J Gruss / Elmar ...著者: Qi Gao / Florian W Hofer / Sebastian Filbeck / Bram J A Vermeulen / Martin Würtz / Annett Neuner / Charlotte Kaplan / Maja Zezlina / Cornelia Sala / Hyesu Shin / Oliver J Gruss / Elmar Schiebel / Stefan Pfeffer / ![]() 要旨: The γ-tubulin ring complex (γ-TuRC) acts as a structural template for microtubule formation at centrosomes, associating with two main compartments: the pericentriolar material and the centriole ...The γ-tubulin ring complex (γ-TuRC) acts as a structural template for microtubule formation at centrosomes, associating with two main compartments: the pericentriolar material and the centriole lumen. In the pericentriolar material, the γ-TuRC is involved in microtubule organization, while the function of the centriole lumenal pool remains unclear. The conformational landscape of the γ-TuRC, which is crucial for its activity, and its centrosomal anchoring mechanisms, which determine γ-TuRC activity and turnover, are not understood. Using cryo-electron tomography, we analyze γ-TuRCs in human cells and purified centrosomes. Pericentriolar γ-TuRCs simultaneously associate with the essential adapter NEDD1 and the microcephaly protein CDK5RAP2. NEDD1 forms a tetrameric structure at the γ-TuRC base through interactions with four GCP3/MZT1 modules and GCP5/6-specific extensions, while multiple copies of CDK5RAP2 engage the γ-TuRC in two distinct binding patterns to promote γ-TuRC closure and activation. In the centriole lumen, the microtubule branching factor Augmin tethers a condensed cluster of γ-TuRCs to the centriole wall with defined directional orientation. Centriole-lumenal γ-TuRC-Augmin is protected from degradation during interphase and released in mitosis to aid chromosome alignment. This study provides a unique view on γ-TuRC structure and molecular organization at centrosomes and identifies an important cellular function of centriole-lumenal γ-TuRCs. | |||||||||||||||
| 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 | 9i8h.cif.gz | 2.4 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9i8h.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9i8h.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 | 9i8h_validation.pdf.gz | 2.2 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9i8h_full_validation.pdf.gz | 2.3 MB | 表示 | |
| XML形式データ | 9i8h_validation.xml.gz | 262.2 KB | 表示 | |
| CIF形式データ | 9i8h_validation.cif.gz | 453.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/i8/9i8h ftp://data.pdbj.org/pub/pdb/validation_reports/i8/9i8h | HTTPS FTP |
-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
-Gamma-tubulin complex component ... , 5種, 16分子 ACEGMBDFHTRIKJLP
| #1: タンパク質 | 分子量: 102666.953 Da / 分子数: 5 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9BSJ2#2: タンパク質 | 分子量: 103710.102 Da / 分子数: 6 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q96CW5#3: タンパク質 | 分子量: 76179.969 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9UGJ1#4: タンパク質 | | 分子量: 118467.547 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q96RT8#5: タンパク質 | 分子量: 200733.641 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q96RT7 |
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-タンパク質 , 3種, 17分子 UQSabcdefghijklmt
| #6: タンパク質 | 分子量: 41957.867 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト)参照: UniProt: P60709, 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 | ||
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| #7: タンパク質 | 分子量: 8485.724 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q08AG7#8: タンパク質 | 分子量: 51241.797 Da / 分子数: 14 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: P23258 |
-非ポリマー , 2種, 15分子 


| #9: 化合物 | ChemComp-ADP / |
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| #10: 化合物 | ChemComp-GDP / |
-詳細
| 研究の焦点であるリガンドがあるか | N |
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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: サブトモグラム平均法 |
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試料調製
| 構成要素 | 名称: gamma-tubulin ring complex from purified human centrosomes タイプ: COMPLEX / Entity ID: #1-#6, #8 / 由来: NATURAL | ||||||||||||||||||||
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| 分子量 | 実験値: NO | ||||||||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) / Organelle: Centrosome | ||||||||||||||||||||
| 緩衝液 | pH: 7.2 | ||||||||||||||||||||
| 緩衝液成分 |
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| 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: TFS 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 / 最大 デフォーカス(公称値): 6000 nm / 最小 デフォーカス(公称値): 3000 nm |
| 撮影 | 電子線照射量: 5.3 e/Å2 / Avg electron dose per subtomogram: 217.3 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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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 | ||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 23.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 739 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
| EM volume selection | Num. of tomograms: 50 / Num. of volumes extracted: 65786 | ||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 6V6S Accession code: 6V6S / Source name: PDB / タイプ: experimental model |
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万見について




Homo sapiens (ヒト)
ドイツ, 4件
引用












PDBj




















FIELD EMISSION GUN
