+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-3589 | |||||||||
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タイトル | Cryo-EM structure of tsA201 cell alpha1B and betaI and betaIVb microtubules | |||||||||
マップデータ | HEK cell tubulin microtubule cryo-EM reconstruction | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 odontoblast differentiation / Post-chaperonin tubulin folding pathway / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Gap junction assembly / Formation of tubulin folding intermediates by CCT/TriC ...odontoblast differentiation / Post-chaperonin tubulin folding pathway / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Gap junction assembly / Formation of tubulin folding intermediates by CCT/TriC / natural killer cell mediated cytotoxicity / COPI-independent Golgi-to-ER retrograde traffic / Kinesins / Assembly and cell surface presentation of NMDA receptors / GTPase activating protein binding / COPI-dependent Golgi-to-ER retrograde traffic / regulation of synapse organization / 細胞結合 / nuclear envelope lumen / Recycling pathway of L1 / RHOH GTPase cycle / spindle assembly / RHO GTPases activate IQGAPs / MHC class I protein binding / Hedgehog 'off' state / cytoplasmic microtubule / microtubule-based process / COPI-mediated anterograde transport / Activation of AMPK downstream of NMDARs / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / Resolution of Sister Chromatid Cohesion / Recruitment of NuMA to mitotic centrosomes / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Anchoring of the basal body to the plasma membrane / MHC class II antigen presentation / cellular response to interleukin-4 / AURKA Activation by TPX2 / RHO GTPases Activate Formins / Translocation of SLC2A4 (GLUT4) to the plasma membrane / 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 / PKR-mediated signaling / structural constituent of cytoskeleton / cytoplasmic ribonucleoprotein granule / 紡錘体 / microtubule cytoskeleton organization / Aggrephagy / HCMV Early Events / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / microtubule cytoskeleton / azurophil granule lumen / Regulation of PLK1 Activity at G2/M Transition / double-stranded RNA binding / mitotic cell cycle / cell body / 微小管 / Potential therapeutics for SARS / 細胞骨格 / 脂質ラフト / 細胞分裂 / protein domain specific binding / GTPase activity / ubiquitin protein ligase binding / Neutrophil degranulation / protein-containing complex binding / structural molecule activity / GTP binding / protein-containing complex / extracellular exosome / extracellular region / 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) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.2 Å | |||||||||
データ登録者 | Vemu A / Atherton J / Spector JO / Moores CA / Roll-Mecak A | |||||||||
資金援助 | 英国, 米国, 2件
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引用 | ジャーナル: Mol Biol Cell / 年: 2017 タイトル: Tubulin isoform composition tunes microtubule dynamics. 著者: Annapurna Vemu / Joseph Atherton / Jeffrey O Spector / Carolyn A Moores / Antonina Roll-Mecak / 要旨: Microtubules polymerize and depolymerize stochastically, a behavior essential for cell division, motility, and differentiation. While many studies advanced our understanding of how microtubule- ...Microtubules polymerize and depolymerize stochastically, a behavior essential for cell division, motility, and differentiation. While many studies advanced our understanding of how microtubule-associated proteins tune microtubule dynamics in trans, we have yet to understand how tubulin genetic diversity regulates microtubule functions. The majority of in vitro dynamics studies are performed with tubulin purified from brain tissue. This preparation is not representative of tubulin found in many cell types. Here we report the 4.2-Å cryo-electron microscopy (cryo-EM) structure and in vitro dynamics parameters of α1B/βI+βIVb microtubules assembled from tubulin purified from a human embryonic kidney cell line with isoform composition characteristic of fibroblasts and many immortalized cell lines. We find that these microtubules grow faster and transition to depolymerization less frequently compared with brain microtubules. Cryo-EM reveals that the dynamic ends of α1B/βI+βIVb microtubules are less tapered and that these tubulin heterodimers display lower curvatures. Interestingly, analysis of EB1 distributions at dynamic ends suggests no differences in GTP cap sizes. Last, we show that the addition of recombinant α1A/βIII tubulin, a neuronal isotype overexpressed in many tumors, proportionally tunes the dynamics of α1B/βI+βIVb microtubules. Our study is an important step toward understanding how tubulin isoform composition tunes microtubule dynamics. | |||||||||
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 | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_3589.map.gz | 2.2 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-3589-v30.xml emd-3589.xml | 14.1 KB 14.1 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_3589.png | 213.9 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-3589 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-3589 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_3589.map.gz / 形式: CCP4 / 大きさ: 11.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | HEK cell tubulin microtubule cryo-EM reconstruction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.221 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : Human tsA201 cell tubulin microtubules
全体 | 名称: Human tsA201 cell tubulin microtubules |
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要素 |
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-超分子 #1: Human tsA201 cell tubulin microtubules
超分子 | 名称: Human tsA201 cell tubulin microtubules / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: Microtubules formed from tsA201 cell tubulin (14pf) with bound GTP analogue GMPCPP. Tubulin was purified via TOG affinity. |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
組換発現 | 生物種: Homo sapiens (ヒト) |
-分子 #1: Tubulin beta chain
分子 | 名称: Tubulin beta chain / タイプ: protein_or_peptide / ID: 1 / 詳細: GMPCPP (GTP-analogue) bound / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 47.735793 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGTYHGDS DLQLDRISVY YNEATGGKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKEAESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS ...文字列: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGTYHGDS DLQLDRISVY YNEATGGKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKEAESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS VVPSPKVSDT VVEPYNATLS VHQLVENTDE TYCIDNEALY DICFRTLKLT TPTYGDLNHL VSATMSGVTT CL RFPGQLN ADLRKLAVNM VPFPRLHFFM PGFAPLTSRG SQQYRALTVP ELTQQVFDAK NMMAACDPRH GRYLTVAAVF RGR MSMKEV DEQMLNVQNK NSSYFVEWIP NNVKTAVCDI PPRGLKMAVT FIGNSTAIQE LFKRISEQFT AMFRRKAFLH WYTG EGMDE MEFTEAESNM NDLVSEYQQY Q |
-分子 #2: Tubulin alpha-1B chain
分子 | 名称: Tubulin alpha-1B chain / タイプ: protein_or_peptide / ID: 2 / 詳細: GTP-bound / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 48.665027 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE ...文字列: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE FSIYPAPQVS TAVVEPYNSI LTTHTTLEHS DCAFMVDNEA IYDICRRNLD IERPTYTNLN RLISQIVSSI TA SLRFDGA LNVDLTEFQT NLVPYPRIHF PLATYAPVIS AEKAYHEQLS VAEITNACFE PANQMVKCDP RHGKYMACCL LYR GDVVPK DVNAAIATIK TKRSIQFVDW CPTGFKVGIN YQPPTVVPGG DLAKVQRAVC MLSNTTAIAE AWARLDHKFD LMYA KRAFV HWYVGEGMEE GEFSEAREDM AALEKDYEEV GV |
-分子 #3: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
分子 | 名称: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / タイプ: ligand / ID: 3 / コピー数: 6 / 式: G2P |
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分子量 | 理論値: 521.208 Da |
Chemical component information | ChemComp-G2P: |
-分子 #4: MAGNESIUM ION
分子 | 名称: MAGNESIUM ION / タイプ: ligand / ID: 4 / コピー数: 12 / 式: MG |
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分子量 | 理論値: 24.305 Da |
-分子 #5: GUANOSINE-5'-TRIPHOSPHATE
分子 | 名称: GUANOSINE-5'-TRIPHOSPHATE / タイプ: ligand / ID: 5 / コピー数: 6 / 式: GTP |
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分子量 | 理論値: 523.18 Da |
Chemical component information | ChemComp-GTP: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | filament |
-試料調製
濃度 | 2.5 mg/mL |
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緩衝液 | pH: 6.8 詳細: BRB80 with GMPCPP (80mM PIPES, 2mM MgCl2, 1mM EGTA, 1mM DTT, 1mM GMPCPP) |
グリッド | モデル: C-flat-2/2 / 材質: COPPER / 前処理 - タイプ: GLOW DISCHARGE |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / 装置: FEI VITROBOT MARK III |
詳細 | Microtubules polymerised at 25mg/ml in BRB80 with GMPCPP and diluted to a final concentration of 2.5mg/ml |
-電子顕微鏡法
顕微鏡 | FEI POLARA 300 |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy |
撮影 | フィルム・検出器のモデル: DIRECT ELECTRON DE-20 (5k x 3k) 検出モード: INTEGRATING / デジタル化 - サンプリング間隔: 1.221 µm / 平均電子線量: 25.0 e/Å2 |
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |
-画像解析
初期 角度割当 | タイプ: PROJECTION MATCHING |
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最終 角度割当 | タイプ: PROJECTION MATCHING / ソフトウェア - 名称: FREALIGN |
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: FREALIGN 詳細: Gold-standard high-resolution noise substitution test employed in resolution estimation (Chen et al., 2013) 使用した粒子像数: 13000 |
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: OTHER |
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得られたモデル | PDB-5n5n: |