+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 6b0i | ||||||
---|---|---|---|---|---|---|---|
タイトル | Apo KLP10A in complex with a microtubule | ||||||
![]() |
| ||||||
![]() | MOTOR PROTEIN/STRUCTURAL PROTEIN / kinesin 13 / microtubule / tubulin / depolymerization / MOTOR PROTEIN-STRUCTURAL PROTEIN complex | ||||||
機能・相同性 | ![]() establishment of mitotic spindle asymmetry / establishment of meiotic spindle orientation / cortical microtubule / plus-end specific microtubule depolymerization / asymmetric protein localization involved in cell fate determination / meiotic spindle pole / mitotic spindle astral microtubule / COPI-dependent Golgi-to-ER retrograde traffic / Kinesins / centriole assembly ...establishment of mitotic spindle asymmetry / establishment of meiotic spindle orientation / cortical microtubule / plus-end specific microtubule depolymerization / asymmetric protein localization involved in cell fate determination / meiotic spindle pole / mitotic spindle astral microtubule / COPI-dependent Golgi-to-ER retrograde traffic / Kinesins / centriole assembly / kinetochore microtubule / meiotic spindle organization / spindle assembly involved in female meiosis I / non-motile cilium assembly / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Resolution of Sister Chromatid Cohesion / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Mitotic Prometaphase / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / EML4 and NUDC in mitotic spindle formation / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / plus-end-directed microtubule motor activity / meiotic spindle / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / kinesin complex / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / microtubule depolymerization / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / microtubule motor activity / COPI-mediated anterograde transport / spindle organization / microtubule-based movement / mitotic spindle pole / cytoskeletal motor activity / centrosome duplication / chromosome, centromeric region / microtubule-based process / mitotic spindle organization / structural constituent of cytoskeleton / microtubule cytoskeleton organization / spindle / neuron migration / spindle pole / mitotic cell cycle / microtubule cytoskeleton / microtubule binding / 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 / microtubule / cell division / GTPase activity / centrosome / GTP binding / ATP hydrolysis activity / ATP binding / metal ion binding / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.78 Å | ||||||
![]() | Benoit, M.P.M.H. / Asenjo, A.B. / Sosa, H. | ||||||
資金援助 | ![]()
| ||||||
![]() | ![]() タイトル: Cryo-EM reveals the structural basis of microtubule depolymerization by kinesin-13s. 著者: Matthieu P M H Benoit / Ana B Asenjo / Hernando Sosa / ![]() 要旨: Kinesin-13s constitute a distinct group within the kinesin superfamily of motor proteins that promote microtubule depolymerization and lack motile activity. The molecular mechanism by which kinesin- ...Kinesin-13s constitute a distinct group within the kinesin superfamily of motor proteins that promote microtubule depolymerization and lack motile activity. The molecular mechanism by which kinesin-13s depolymerize microtubules and are adapted to perform a seemingly very different activity from other kinesins is still unclear. To address this issue, here we report the near atomic resolution cryo-electron microscopy (cryo-EM) structures of Drosophila melanogaster kinesin-13 KLP10A protein constructs bound to curved or straight tubulin in different nucleotide states. These structures show how nucleotide induced conformational changes near the catalytic site are coupled with movement of the kinesin-13-specific loop-2 to induce tubulin curvature leading to microtubule depolymerization. The data highlight a modular structure that allows similar kinesin core motor-domains to be used for different functions, such as motility or microtubule depolymerization. | ||||||
履歴 |
|
-
構造の表示
ムービー |
![]() |
---|---|
構造ビューア | 分子: ![]() ![]() |
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 235.1 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 183.9 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 |
---|
-関連構造データ
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 | ![]()
| x 35
2 |
|
3 | ![]()
|
対称性 | らせん対称: (回転対称性: 1 / Dyad axis: no / N subunits divisor: 1 / Num. of operations: 35 / Rise per n subunits: 5.5 Å / Rotation per n subunits: 168.083 °) |
-
要素
-タンパク質 , 3種, 3分子 AKB
#1: タンパク質 | 分子量: 50204.445 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
---|---|
#2: タンパク質 | 分子量: 46975.758 Da / 分子数: 1 / Fragment: neck-motor (UNP residues 197-615) / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: Klp10A, CG1453 / 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 49999.887 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
-非ポリマー , 4種, 4分子 






#4: 化合物 | ChemComp-GTP / |
---|---|
#5: 化合物 | ChemComp-MG / |
#6: 化合物 | ChemComp-GDP / |
#7: 化合物 | ChemComp-TA1 / |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
EM実験 | 試料の集合状態: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
-
試料調製
構成要素 |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
分子量 | 実験値: NO | ||||||||||||||||||||||||
由来(天然) |
| ||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||||||
緩衝液 | pH: 6.8 詳細: with 20.10^(-3) unit of potato apyrase (Sigma-Aldrich, MO) | ||||||||||||||||||||||||
緩衝液成分 |
| ||||||||||||||||||||||||
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 | 凍結剤: ETHANE |
-
電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
---|---|
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): 22500 X / 倍率(補正後): 46598 X / 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: 1.28 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) |
画像スキャン | 動画フレーム数/画像: 50 / 利用したフレーム数/画像: 1-50 |
-
解析
EMソフトウェア |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: 168.083 ° / 軸方向距離/サブユニット: 5.5 Å / らせん対称軸の対称性: C1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 詳細: manual picking of filaments | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.78 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 10647 詳細: 2 independent reconstructions, each using a distinct half of every filament. 対称性のタイプ: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL |