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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: 9h9p | |||||||||||||||||||||
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| タイトル | Spokes 12 and 13 of the human gamma-tubulin ring complex in complex with CDK5RAP2 and docked MZT2/GCP2-NHD module | |||||||||||||||||||||
要素 |
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キーワード | CELL CYCLE / cytoskeleton / microtubule / microtubule nucleation / complex / template / cap / gamma-tubulin / gamma-tubulin ring complex / CDK5RAP2 / Homo / sapiens / GCP6 / GCP2 / gamma-tubulin complex protein / MZT2 / Mozart / Mozart2 / module / CM1 / CM1 motif / CEP215 | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報microtubule nucleator activity / negative regulation of centriole replication / regulation of mitotic cell cycle spindle assembly checkpoint / microtubule organizing center organization / polar microtubule / gamma-tubulin complex / gamma-tubulin ring complex / microtubule plus-end / mitotic spindle microtubule / meiotic spindle organization ...microtubule nucleator activity / negative regulation of centriole replication / regulation of mitotic cell cycle spindle assembly checkpoint / microtubule organizing center organization / polar microtubule / gamma-tubulin complex / gamma-tubulin ring complex / microtubule plus-end / mitotic spindle microtubule / meiotic spindle organization / microtubule nucleation / microtubule bundle formation / gamma-tubulin binding / non-motile cilium / regulation of neuron differentiation / centrosome cycle / negative regulation of neuron differentiation / mitotic spindle pole / establishment of mitotic spindle orientation / pericentriolar material / centriole replication / cell leading edge / mitotic sister chromatid segregation / microtubule organizing center / positive regulation of microtubule polymerization / cytoplasmic microtubule / spindle assembly / cytoplasmic microtubule organization / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / neurogenesis / AURKA Activation by TPX2 / mitotic spindle organization / condensed nuclear chromosome / meiotic cell cycle / chromosome segregation / centriole / tubulin binding / brain development / recycling endosome / structural constituent of cytoskeleton / microtubule cytoskeleton organization / spindle / neuron migration / apical part of cell / spindle pole / cell junction / Regulation of PLK1 Activity at G2/M Transition / mitotic cell cycle / sperm principal piece / protein-containing complex assembly / sperm midpiece / microtubule binding / cytoskeleton / microtubule / calmodulin binding / neuron projection / transcription cis-regulatory region binding / ciliary basal body / centrosome / protein kinase binding / positive regulation of DNA-templated transcription / GTP binding / protein-containing complex binding / perinuclear region of cytoplasm / Golgi apparatus / extracellular exosome / nucleoplasm / membrane / identical protein binding / nucleus / cytoplasm / cytosol 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: 4.5 Å | |||||||||||||||||||||
データ登録者 | Vermeulen, B.J.A. / Pfeffer, S. | |||||||||||||||||||||
| 資金援助 | ドイツ, 6件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural insights into the interplay between microtubule polymerases, γ-tubulin complexes and their receptors. 著者: Anjun Zheng / Bram J A Vermeulen / Martin Würtz / Annett Neuner / Nicole Lübbehusen / Matthias P Mayer / Elmar Schiebel / Stefan Pfeffer / ![]() 要旨: The γ-tubulin ring complex (γ-TuRC) is a structural template for controlled nucleation of microtubules from α/β-tubulin heterodimers. At the cytoplasmic side of the yeast spindle pole body, the ...The γ-tubulin ring complex (γ-TuRC) is a structural template for controlled nucleation of microtubules from α/β-tubulin heterodimers. At the cytoplasmic side of the yeast spindle pole body, the CM1-containing receptor protein Spc72 promotes γ-TuRC assembly from seven γ-tubulin small complexes (γ-TuSCs) and recruits the microtubule polymerase Stu2, yet their molecular interplay remains unclear. Here, we determine the cryo-EM structure of the Candida albicans cytoplasmic nucleation unit at 3.6 Å resolution, revealing how the γ-TuRC is assembled and conformationally primed for microtubule nucleation by the dimerised Spc72 CM1 motif. Two coiled-coil regions of Spc72 interact with the conserved C-terminal α-helix of Stu2 and thereby position the α/β-tubulin-binding TOG domains of Stu2 in the vicinity of the microtubule assembly site. Collectively, we reveal the function of CM1 motifs in γ-TuSC oligomerisation and the recruitment of microtubule polymerases to the γ-TuRC. #1: ジャーナル: Cell Rep / 年: 2020タイトル: MZT Proteins Form Multi-Faceted Structural Modules in the γ-Tubulin Ring Complex. 著者: Michal Wieczorek / Tzu-Lun Huang / Linas Urnavicius / Kuo-Chiang Hsia / Tarun M Kapoor / ![]() 要旨: Microtubule organization depends on the γ-tubulin ring complex (γ-TuRC), a ∼2.3-MDa nucleation factor comprising an asymmetric assembly of γ-tubulin and GCP2-GCP6. However, it is currently ...Microtubule organization depends on the γ-tubulin ring complex (γ-TuRC), a ∼2.3-MDa nucleation factor comprising an asymmetric assembly of γ-tubulin and GCP2-GCP6. However, it is currently unclear how the γ-TuRC-associated microproteins MZT1 and MZT2 contribute to the structure and regulation of the holocomplex. Here, we report cryo-EM structures of MZT1 and MZT2 in the context of the native human γ-TuRC. MZT1 forms two subcomplexes with the N-terminal α-helical domains of GCP3 or GCP6 (GCP-NHDs) within the γ-TuRC "lumenal bridge." We determine the X-ray structure of recombinant MZT1/GCP6-NHD and find it is similar to that within the native γ-TuRC. We identify two additional MZT/GCP-NHD-like subcomplexes, one of which is located on the outer face of the γ-TuRC and comprises MZT2 and GCP2-NHD in complex with a centrosomin motif 1 (CM1)-containing peptide. Our data reveal how MZT1 and MZT2 establish multi-faceted, structurally mimetic "modules" that can expand structural and regulatory interfaces in the γ-TuRC. | |||||||||||||||||||||
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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 | 9h9p.cif.gz | 541.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9h9p.ent.gz | 320.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9h9p.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/h9/9h9p ftp://data.pdbj.org/pub/pdb/validation_reports/h9/9h9p | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 9h9qC ![]() 9h9rC 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
-タンパク質 , 5種, 7分子 AGLMlmC
| #1: タンパク質 | 分子量: 215417.359 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CDK5RAP2, CEP215, KIAA1633 / 発現宿主: ![]() #2: タンパク質 | | 分子量: 200733.641 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: Hela S3 / 参照: UniProt: Q96RT7#3: タンパク質 | | 分子量: 105765.719 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: Hela S3 / 参照: UniProt: Q9BSJ2#4: タンパク質 | 分子量: 51255.824 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: Hela S3 / 参照: UniProt: P23258#5: タンパク質 | | 分子量: 16240.576 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: Hela S3 / 参照: UniProt: Q6P582 |
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-非ポリマー , 1種, 2分子 
| #6: 化合物 |
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-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: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: Spokes 12 and 13 of the human gamma-tubulin ring complex in complex with CDK5RAP2 and docked MZT2/GCP2-NHD module タイプ: COMPLEX / Entity ID: #1-#5 / 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) |
| 緩衝液 | pH: 7.5 |
| 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: 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 / 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 |
| 撮影 | 電子線照射量: 45 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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| 3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 137513 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 40.95 Å2 | ||||||||||||||||||||||||
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
ドイツ, 6件
引用






PDBj





FIELD EMISSION GUN