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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: 6sc2 | |||||||||||||||||||||||||||
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タイトル | Structure of the dynein-2 complex; IFT-train bound model | |||||||||||||||||||||||||||
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![]() | MOTOR PROTEIN / dynein / cilia / intraflagellar transport / complex | |||||||||||||||||||||||||||
機能・相同性 | ![]() intraciliary transport involved in cilium assembly / deoxyribonuclease inhibitor activity / negative regulation of DNA strand resection involved in replication fork processing / methylated-DNA-[protein]-cysteine S-methyltransferase / methylated-DNA-[protein]-cysteine S-methyltransferase activity / visual behavior / intraciliary retrograde transport / intraciliary transport / dynein light chain binding / regulation of cilium assembly ...intraciliary transport involved in cilium assembly / deoxyribonuclease inhibitor activity / negative regulation of DNA strand resection involved in replication fork processing / methylated-DNA-[protein]-cysteine S-methyltransferase / methylated-DNA-[protein]-cysteine S-methyltransferase activity / visual behavior / intraciliary retrograde transport / intraciliary transport / dynein light chain binding / regulation of cilium assembly / ciliary transition zone / dynein heavy chain binding / motile cilium assembly / Activation of BIM and translocation to mitochondria / negative regulation of phosphorylation / embryonic skeletal system morphogenesis / ciliary tip / Intraflagellar transport / dynein complex / cell projection organization / minus-end-directed microtubule motor activity / COPI-independent Golgi-to-ER retrograde traffic / dynein light intermediate chain binding / cytoplasmic dynein complex / ciliary plasm / dynein intermediate chain binding / enzyme inhibitor activity / determination of left/right symmetry / microtubule motor activity / motile cilium / microtubule-based movement / Macroautophagy / pericentriolar material / ciliary base / tertiary granule membrane / ficolin-1-rich granule membrane / axoneme / cilium assembly / COPI-mediated anterograde transport / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / 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 / MHC class II antigen presentation / substantia nigra development / Recruitment of NuMA to mitotic centrosomes / Resolution of Sister Chromatid Cohesion / Anchoring of the basal body to the plasma membrane / centriole / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / AURKA Activation by TPX2 / ciliary basal body / filopodium / RHO GTPases Activate Formins / kinetochore / cilium / mitotic spindle / HCMV Early Events / Aggrephagy / Separation of Sister Chromatids / Regulation of PLK1 Activity at G2/M Transition / apical part of cell / site of double-strand break / methylation / microtubule / cytoskeleton / DNA repair / centrosome / apoptotic process / DNA damage response / Neutrophil degranulation / Golgi apparatus / ATP hydrolysis activity / mitochondrion / DNA binding / extracellular space / ATP binding / nucleus / membrane / metal ion binding / plasma membrane / 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: 3.9 Å | |||||||||||||||||||||||||||
![]() | Toropova, K. / Zalyte, R. / Mukhopadhyay, A.G. / Mladenov, M. / Carter, A.P. / Roberts, A.J. | |||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of the dynein-2 complex and its assembly with intraflagellar transport trains. 著者: Katerina Toropova / Ruta Zalyte / Aakash G Mukhopadhyay / Miroslav Mladenov / Andrew P Carter / Anthony J Roberts / ![]() 要旨: Dynein-2 assembles with polymeric intraflagellar transport (IFT) trains to form a transport machinery that is crucial for cilia biogenesis and signaling. Here we recombinantly expressed the ~1.4-MDa ...Dynein-2 assembles with polymeric intraflagellar transport (IFT) trains to form a transport machinery that is crucial for cilia biogenesis and signaling. Here we recombinantly expressed the ~1.4-MDa human dynein-2 complex and solved its cryo-EM structure to near-atomic resolution. The two identical copies of the dynein-2 heavy chain are contorted into different conformations by a WDR60-WDR34 heterodimer and a block of two RB and six LC8 light chains. One heavy chain is steered into a zig-zag conformation, which matches the periodicity of the anterograde IFT-B train. Contacts between adjacent dyneins along the train indicate a cooperative mode of assembly. Removal of the WDR60-WDR34-light chain subcomplex renders dynein-2 monomeric and relieves autoinhibition of its motility. Our results converge on a model in which an unusual stoichiometry of non-motor subunits controls dynein-2 assembly, asymmetry, and activity, giving mechanistic insight into the interaction of dynein-2 with IFT trains and the origin of diverse functions in the dynein family. #1: ![]() タイトル: The cryo-EM structure of intraflagellar transport trains reveals how dynein is inactivated to ensure unidirectional anterograde movement in cilia. 著者: Mareike A Jordan / Dennis R Diener / Ludek Stepanek / Gaia Pigino / ![]() 要旨: Movement of cargos along microtubules plays key roles in diverse cellular processes, from signalling to mitosis. In cilia, rapid movement of ciliary components along the microtubules to and from the ...Movement of cargos along microtubules plays key roles in diverse cellular processes, from signalling to mitosis. In cilia, rapid movement of ciliary components along the microtubules to and from the assembly site is essential for the assembly and disassembly of the structure itself. This bidirectional transport, known as intraflagellar transport (IFT), is driven by the anterograde motor kinesin-2 and the retrograde motor dynein-1b (dynein-2 in mammals). However, to drive retrograde transport, dynein-1b must first be delivered to the ciliary tip by anterograde IFT. Although, the presence of opposing motors in bidirectional transport processes often leads to periodic stalling and slowing of cargos, IFT is highly processive. Using cryo-electron tomography, we show that a tug-of-war between kinesin-2 and dynein-1b is prevented by loading dynein-1b onto anterograde IFT trains in an autoinhibited form and by positioning it away from the microtubule track to prevent binding. Once at the ciliary tip, dynein-1b must transition into an active form and engage microtubules to power retrograde trains. These findings provide a striking example of how coordinated structural changes mediate the behaviour of complex cellular machinery. | |||||||||||||||||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 1.4 MB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.3 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 152.7 KB | 表示 | |
CIF形式データ | ![]() | 291.9 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | 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
-O6-alkylguanine-DNA alkyltransferase mutant,DYNC2H1 variant protein,O6-alkylguanine-DNA ... , 2種, 2分子 AB
#1: タンパク質 | 分子量: 507610.219 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: E5BBQ0, UniProt: B0I1S0 |
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#2: タンパク質 | 分子量: 504891.344 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: E5BBQ0, UniProt: B0I1S0 |
-WD repeat-containing protein ... , 2種, 2分子 CD
#3: タンパク質 | 分子量: 122865.156 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q8WVS4 |
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#4: タンパク質 | 分子量: 60768.293 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q96EX3 |
-タンパク質 , 1種, 2分子 EF
#5: タンパク質 | 分子量: 39681.621 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q8TCX1 |
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-Dynein light chain ... , 2種, 8分子 GHIJKLMN
#6: タンパク質 | 分子量: 10934.576 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9NP97 #7: タンパク質 | 分子量: 10381.899 Da / 分子数: 6 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P63167 |
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-非ポリマー , 3種, 10分子 




#8: 化合物 | ChemComp-ADP / #9: 化合物 | #10: 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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-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: Dynein-2 complex / タイプ: COMPLEX / Entity ID: #1-#7 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
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 |
試料支持 | グリッドの材料: COPPER |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 49.6 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) 詳細: Average electron dose per image (e-/A2) for additional datasets was 46.8 and 45.4 |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
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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: C2 (2回回転対称) | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 57265 詳細: Above values for the motor domain map (EMD-4917). For the tail domain map (EMD-4918), number of particles used was 68623, resolution was 4.5 A using the FSC 0.143 cut-off, even/odd maps ...詳細: Above values for the motor domain map (EMD-4917). For the tail domain map (EMD-4918), number of particles used was 68623, resolution was 4.5 A using the FSC 0.143 cut-off, even/odd maps refined totally independent (gold standard), C1 symmetry. 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: BACKBONE TRACE 詳細: EMD entries 4917 and 4918 (motor and tail domain reconstructions of human dynein-2 complex) were docked into a subtomogram average of IFT complex B and inhibited dynein-1b in anterograde IFT ...詳細: EMD entries 4917 and 4918 (motor and tail domain reconstructions of human dynein-2 complex) were docked into a subtomogram average of IFT complex B and inhibited dynein-1b in anterograde IFT trains from C. reinhardtii cilia (EMD-4303) using Chimera's 'Fit in Map' command. The two DHC2 bundles connecting the tail and motor domain were modelled using SWISS-MODEL and RaptorX Contact (deposition as UNK). |