- PDB-5m50: Mechanism of microtubule minus-end recognition and protection by ... -
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基本情報
登録情報
データベース: PDB / ID: 5m50
タイトル
Mechanism of microtubule minus-end recognition and protection by CAMSAP proteins
要素
Calmodulin-regulated spectrin-associated protein 3
Tubulin alpha chain
Tubulin beta-2B chain
キーワード
STRUCTURAL PROTEIN / CAMSAP CKK Microtubule Tubulin
機能・相同性
機能・相同性情報
regulation of organelle organization / zonula adherens maintenance / microtubule minus-end / protein transport along microtubule / 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 ...regulation of organelle organization / zonula adherens maintenance / microtubule minus-end / protein transport along microtubule / 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 / microtubule anchoring / regulation of Golgi organization / COPI-dependent Golgi-to-ER retrograde traffic / COPI-independent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / RHO GTPases activate IQGAPs / microtubule minus-end binding / RHO GTPases Activate Formins / establishment or maintenance of microtubule cytoskeleton polarity / MHC class II antigen presentation / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / cilium movement / Aggrephagy / epithelial cell-cell adhesion / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / zonula adherens / 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 / establishment of epithelial cell apical/basal polarity / embryo development ending in birth or egg hatching / positive regulation of axon guidance / motile cilium / regulation of focal adhesion assembly / spectrin binding / regulation of microtubule polymerization / axoneme / microtubule-based process / cytoplasmic microtubule / cellular response to interleukin-4 / regulation of microtubule cytoskeleton organization / regulation of cell migration / structural constituent of cytoskeleton / microtubule cytoskeleton organization / neuron migration / neuron projection development / actin filament binding / mitotic cell cycle / double-stranded RNA binding / microtubule cytoskeleton / 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 / in utero embryonic development / microtubule / calmodulin binding / hydrolase activity / cilium / ciliary basal body / protein heterodimerization activity / GTPase activity / ubiquitin protein ligase binding / centrosome / GTP binding / metal ion binding / cytosol / cytoplasm 類似検索 - 分子機能
ジャーナル: Nat Struct Mol Biol / 年: 2017 タイトル: A structural model for microtubule minus-end recognition and protection by CAMSAP proteins. 著者: Joseph Atherton / Kai Jiang / Marcel M Stangier / Yanzhang Luo / Shasha Hua / Klaartje Houben / Jolien J E van Hooff / Agnel-Praveen Joseph / Guido Scarabelli / Barry J Grant / Anthony J ...著者: Joseph Atherton / Kai Jiang / Marcel M Stangier / Yanzhang Luo / Shasha Hua / Klaartje Houben / Jolien J E van Hooff / Agnel-Praveen Joseph / Guido Scarabelli / Barry J Grant / Anthony J Roberts / Maya Topf / Michel O Steinmetz / Marc Baldus / Carolyn A Moores / Anna Akhmanova / 要旨: CAMSAP and Patronin family members regulate microtubule minus-end stability and localization and thus organize noncentrosomal microtubule networks, which are essential for cell division, polarization ...CAMSAP and Patronin family members regulate microtubule minus-end stability and localization and thus organize noncentrosomal microtubule networks, which are essential for cell division, polarization and differentiation. Here, we found that the CAMSAP C-terminal CKK domain is widely present among eukaryotes and autonomously recognizes microtubule minus ends. Through a combination of structural approaches, we uncovered how mammalian CKK binds between two tubulin dimers at the interprotofilament interface on the outer microtubule surface. In vitro reconstitution assays combined with high-resolution fluorescence microscopy and cryo-electron tomography suggested that CKK preferentially associates with the transition zone between curved protofilaments and the regular microtubule lattice. We propose that minus-end-specific features of the interprotofilament interface at this site serve as the basis for CKK's minus-end preference. The steric clash between microtubule-bound CKK and kinesin motors explains how CKK protects microtubule minus ends against kinesin-13-induced depolymerization and thus controls the stability of free microtubule minus ends.
電子線照射量: 25 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: DIRECT ELECTRON DE-20 (5k x 3k) 詳細: 25e-/A2 used in final reconstuctions
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解析
ソフトウェア
名称: PHENIX / バージョン: 1.11.1_2575: / 分類: 精密化
EMソフトウェア
ID
名称
カテゴリ
9
SPIDER
初期オイラー角割当
10
FREALIGN
最終オイラー角割当
CTF補正
タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION
3次元再構成
解像度: 5.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 6530 詳細: Gold-standard noise substitution test used to asses for over fitting (Chen et al., 2013) 対称性のタイプ: POINT