- EMDB-3623: Microtubule-bound MKLP2 motor domain in the presence of AMPPNP -
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基本情報
登録情報
データベース: EMDB / ID: EMD-3623
タイトル
Microtubule-bound MKLP2 motor domain in the presence of AMPPNP
マップデータ
'Microtubule-bound MKLP2 motor domain with AMPPNP'
試料
複合体: Complex of 13pf microtubule with bound MKLP2 motor domain in the presence of AMPPNP
複合体: Kinesin-like protein KIF20A
タンパク質・ペプチド: Kinesin-like protein KIF20A
複合体: Tubulin alpha and beta chains
タンパク質・ペプチド: Tubulin alpha chain
タンパク質・ペプチド: Tubulin beta-2B chain
リガンド: MAGNESIUM ION
リガンド: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
リガンド: GUANOSINE-5'-TRIPHOSPHATE
リガンド: GUANOSINE-5'-DIPHOSPHATE
リガンド: TAXOL
キーワード
Kinesin Mitosis Microtubules / Motor protein
機能・相同性
機能・相同性情報
Mitotic Telophase/Cytokinesis / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Intraflagellar transport / Carboxyterminal post-translational modifications of tubulin / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation ...Mitotic Telophase/Cytokinesis / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Intraflagellar transport / Carboxyterminal post-translational modifications of tubulin / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / COPI-dependent Golgi-to-ER retrograde traffic / COPI-independent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / Kinesins / MHC class II antigen presentation / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Aggrephagy / COPI-dependent Golgi-to-ER retrograde traffic / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / Loss of Nlp from mitotic centrosomes / Recruitment of mitotic centrosome proteins and complexes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / Recruitment of NuMA to mitotic centrosomes / Regulation of PLK1 Activity at G2/M Transition / Hedgehog 'off' state / midbody abscission / MHC class II antigen presentation / microtubule bundle formation / positive regulation of axon guidance / microtubule motor activity / microtubule-based movement / cleavage furrow / mitotic cytokinesis / microtubule-based process / intercellular bridge / cytoplasmic microtubule / cellular response to interleukin-4 / regulation of cytokinesis / structural constituent of cytoskeleton / microtubule cytoskeleton organization / spindle / neuron migration / mitotic spindle / protein transport / mitotic cell cycle / double-stranded RNA binding / microtubule cytoskeleton / midbody / 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 / hydrolase activity / cilium / protein heterodimerization activity / GTPase activity / ubiquitin protein ligase binding / protein kinase binding / GTP binding / Golgi apparatus / nucleoplasm / ATP binding / metal ion binding / cytosol / cytoplasm 類似検索 - 分子機能
: / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. / Kinesin motor, catalytic domain. ATPase. / Kinesin motor domain / Kinesin motor domain superfamily / Alpha tubulin / Tubulin-beta mRNA autoregulation signal. ...: / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. / Kinesin motor, catalytic domain. ATPase. / Kinesin motor domain / Kinesin motor domain superfamily / Alpha tubulin / Tubulin-beta mRNA autoregulation signal. / Beta tubulin, autoregulation binding site / Beta tubulin / Tubulin / Tubulin, C-terminal / Tubulin C-terminal domain / Tubulin, conserved site / Tubulin subunits alpha, beta, and gamma signature. / Tubulin/FtsZ family, C-terminal domain / Tubulin/FtsZ-like, C-terminal domain / Tubulin/FtsZ, C-terminal / Tubulin/FtsZ, 2-layer sandwich domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ, GTPase domain / Tubulin/FtsZ, GTPase domain superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
ジャーナル: Elife / 年: 2017 タイトル: The divergent mitotic kinesin MKLP2 exhibits atypical structure and mechanochemistry. 著者: Joseph Atherton / I-Mei Yu / Alexander Cook / Joseph M Muretta / Agnel Joseph / Jennifer Major / Yannick Sourigues / Jeffrey Clause / Maya Topf / Steven S Rosenfeld / Anne Houdusse / Carolyn A Moores / 要旨: MKLP2, a kinesin-6, has critical roles during the metaphase-anaphase transition and cytokinesis. Its motor domain contains conserved nucleotide binding motifs, but is divergent in sequence (~35% ...MKLP2, a kinesin-6, has critical roles during the metaphase-anaphase transition and cytokinesis. Its motor domain contains conserved nucleotide binding motifs, but is divergent in sequence (~35% identity) and size (~40% larger) compared to other kinesins. Using cryo-electron microscopy and biophysical assays, we have undertaken a mechanochemical dissection of the microtubule-bound MKLP2 motor domain during its ATPase cycle, and show that many facets of its mechanism are distinct from other kinesins. While the MKLP2 neck-linker is directed towards the microtubule plus-end in an ATP-like state, it does not fully dock along the motor domain. Furthermore, the footprint of the MKLP2 motor domain on the MT surface is altered compared to motile kinesins, and enhanced by kinesin-6-specific sequences. The conformation of the highly extended loop6 insertion characteristic of kinesin-6s is nucleotide-independent and does not contact the MT surface. Our results emphasize the role of family-specific insertions in modulating kinesin motor function.
A: 246.4 Å / B: 214.06 Å / C: 247.93999 Å α=β=γ: 90.0 °
CCP4マップ ヘッダ情報:
mode
Image stored as Reals
Å/pix. X/Y/Z
1.54
1.54
1.54
M x/y/z
160
139
161
origin x/y/z
0.000
0.000
0.000
length x/y/z
246.400
214.060
247.940
α/β/γ
90.000
90.000
90.000
MAP C/R/S
1
2
3
start NC/NR/NS
58
70
123
NC/NR/NS
160
139
161
D min/max/mean
-0.031
0.084
0.003
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添付データ
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試料の構成要素
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全体 : Complex of 13pf microtubule with bound MKLP2 motor domain in the ...
全体
名称: Complex of 13pf microtubule with bound MKLP2 motor domain in the presence of AMPPNP
要素
複合体: Complex of 13pf microtubule with bound MKLP2 motor domain in the presence of AMPPNP
複合体: Kinesin-like protein KIF20A
タンパク質・ペプチド: Kinesin-like protein KIF20A
複合体: Tubulin alpha and beta chains
タンパク質・ペプチド: Tubulin alpha chain
タンパク質・ペプチド: Tubulin beta-2B chain
リガンド: MAGNESIUM ION
リガンド: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
リガンド: GUANOSINE-5'-TRIPHOSPHATE
リガンド: GUANOSINE-5'-DIPHOSPHATE
リガンド: TAXOL
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超分子 #1: Complex of 13pf microtubule with bound MKLP2 motor domain in the ...
超分子
名称: Complex of 13pf microtubule with bound MKLP2 motor domain in the presence of AMPPNP タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3 / 詳細: Microtubule bound to taxol
フィルム・検出器のモデル: DIRECT ELECTRON DE-20 (5k x 3k) 検出モード: INTEGRATING / 平均電子線量: 20.0 e/Å2
電子線
加速電圧: 200 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 FIELD
実験機器
モデル: Tecnai F20 / 画像提供: FEI Company
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画像解析
CTF補正
タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION
初期モデル
モデルのタイプ: PDB ENTRY
最終 再構成
解像度のタイプ: BY AUTHOR / 解像度: 7.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF 詳細: Gold-standard FSCtrue using noise substitution test (Chen et al., 2014) 使用した粒子像数: 10858