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基本情報
登録情報 | データベース: PDB / ID: 7ttt | ||||||||||||
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タイトル | The beta-tubulin folding intermediate III | ||||||||||||
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![]() | CHAPERONE / Human chaperonin TRiC with beta-tubulin folding intermediate III | ||||||||||||
機能・相同性 | ![]() odontoblast differentiation / positive regulation of establishment of protein localization to telomere / zona pellucida receptor complex / cytoskeleton-dependent intracellular transport / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / tubulin complex assembly / chaperonin-containing T-complex / : ...odontoblast differentiation / positive regulation of establishment of protein localization to telomere / zona pellucida receptor complex / cytoskeleton-dependent intracellular transport / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / tubulin complex assembly / chaperonin-containing T-complex / : / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / Folding of actin by CCT/TriC / binding of sperm to zona pellucida / Prefoldin mediated transfer of substrate to CCT/TriC / GTPase activating protein binding / RHOBTB1 GTPase cycle / WD40-repeat domain binding / natural killer cell mediated cytotoxicity / pericentriolar material / regulation of synapse organization / nuclear envelope lumen / beta-tubulin binding / MHC class I protein binding / Association of TriC/CCT with target proteins during biosynthesis / chaperone-mediated protein complex assembly / microtubule-based process / heterochromatin / RHOBTB2 GTPase cycle / intercellular bridge / spindle assembly / : / positive regulation of telomere maintenance via telomerase / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / protein folding chaperone / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / acrosomal vesicle / AURKA Activation by TPX2 / mRNA 3'-UTR binding / cell projection / ATP-dependent protein folding chaperone / response to virus / structural constituent of cytoskeleton / microtubule cytoskeleton organization / mRNA 5'-UTR binding / cytoplasmic ribonucleoprotein granule / mitotic spindle / azurophil granule lumen / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Regulation of PLK1 Activity at G2/M Transition / unfolded protein binding / melanosome / G-protein beta-subunit binding / protein folding / mitotic cell cycle / microtubule cytoskeleton / cell body / secretory granule lumen / microtubule / Potential therapeutics for SARS / ficolin-1-rich granule lumen / cytoskeleton / protein stabilization / cilium / cadherin binding / protein domain specific binding / membrane raft / cell division / GTPase activity / centrosome / ubiquitin protein ligase binding / Neutrophil degranulation / protein-containing complex binding / GTP binding / structural molecule activity / Golgi apparatus / protein-containing complex / ATP hydrolysis activity / RNA binding / extracellular exosome / extracellular region / nucleoplasm / ATP binding / metal ion binding / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() | ||||||||||||
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: 2.9 Å | ||||||||||||
![]() | Zhao, Y. / Frydman, J. / Chiu, W. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural visualization of the tubulin folding pathway directed by human chaperonin TRiC/CCT. 著者: Daniel Gestaut / Yanyan Zhao / Junsun Park / Boxue Ma / Alexander Leitner / Miranda Collier / Grigore Pintilie / Soung-Hun Roh / Wah Chiu / Judith Frydman / ![]() ![]() ![]() 要旨: The ATP-dependent ring-shaped chaperonin TRiC/CCT is essential for cellular proteostasis. To uncover why some eukaryotic proteins can only fold with TRiC assistance, we reconstituted the folding of ...The ATP-dependent ring-shaped chaperonin TRiC/CCT is essential for cellular proteostasis. To uncover why some eukaryotic proteins can only fold with TRiC assistance, we reconstituted the folding of β-tubulin using human prefoldin and TRiC. We find unstructured β-tubulin is delivered by prefoldin to the open TRiC chamber followed by ATP-dependent chamber closure. Cryo-EM resolves four near-atomic-resolution structures containing progressively folded β-tubulin intermediates within the closed TRiC chamber, culminating in native tubulin. This substrate folding pathway appears closely guided by site-specific interactions with conserved regions in the TRiC chamber. Initial electrostatic interactions between the TRiC interior wall and both the folded tubulin N domain and its C-terminal E-hook tail establish the native substrate topology, thus enabling C-domain folding. Intrinsically disordered CCT C termini within the chamber promote subsequent folding of tubulin's core and middle domains and GTP-binding. Thus, TRiC's chamber provides chemical and topological directives that shape the folding landscape of its obligate substrates. | ||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 1 MB | 表示 | ![]() |
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PDB形式 | ![]() | 708.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 26123MC ![]() 7trgC ![]() 7ttnC ![]() 7tubC ![]() 7wu7C C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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 , 1種, 1分子 A
#1: タンパク質 | 分子量: 49717.629 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-T-complex protein 1 subunit ... , 8種, 8分子 BCDEFGHI
#2: タンパク質 | 分子量: 59576.332 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#3: タンパク質 | 分子量: 60560.672 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#4: タンパク質 | 分子量: 59749.957 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#5: タンパク質 | 分子量: 57567.141 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#6: タンパク質 | 分子量: 57996.113 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#7: タンパク質 | 分子量: 60418.477 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#8: タンパク質 | 分子量: 60613.855 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#9: タンパク質 | 分子量: 58166.180 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-非ポリマー , 4種, 32分子 






#10: 化合物 | ChemComp-MG / #11: 化合物 | ChemComp-ADP / #12: 化合物 | ChemComp-AF3 / #13: 水 | ChemComp-HOH / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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-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: Closed form human TRiC in complex with beta-tubulin under ATP/AlFx condition. タイプ: COMPLEX / Entity ID: #9, #2-#4, #6-#8, #5, #1 / 由来: RECOMBINANT | ||||||||||||||||||||||||||||||||||||||||
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分子量 | 値: 1 MDa / 実験値: YES | ||||||||||||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||||||||||||||||||||||
緩衝液 | pH: 7.4 | ||||||||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||||||||||||
試料支持 | グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||||||||||||||
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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 500 nm |
撮影 | 電子線照射量: 1.21 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING ONLY |
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3次元再構成 | 解像度: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 94955 / 対称性のタイプ: POINT |
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL |