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基本情報
| 登録情報 | データベース: PDB / ID: 9w9i | |||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of the kinesin-2 tail domain in complex with KAP3 and APC | |||||||||||||||||||||||||||
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キーワード | MOTOR PROTEIN / Kinesin-2 motor Intracellular transport Kinesin-adaptor-cargo complex | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報negative regulation of odontogenesis / axis specification / positive regulation of calcium-dependent cell-cell adhesion / opsin transport / epidermal stem cell homeostasis / positive regulation of axo-dendritic protein transport / positive regulation of establishment or maintenance of cell polarity regulating cell shape / kinesin II complex / : / intraciliary transport particle B binding ...negative regulation of odontogenesis / axis specification / positive regulation of calcium-dependent cell-cell adhesion / opsin transport / epidermal stem cell homeostasis / positive regulation of axo-dendritic protein transport / positive regulation of establishment or maintenance of cell polarity regulating cell shape / kinesin II complex / : / intraciliary transport particle B binding / Apoptotic cleavage of cellular proteins / periciliary membrane compartment / anterograde dendritic transport / Beta-catenin phosphorylation cascade / Activation of SMO / Disassembly of the destruction complex and recruitment of AXIN to the membrane / Intraflagellar transport / nitrogen cycle metabolic process / regulation of epithelial cell differentiation / centriole-centriole cohesion / protein localization to cell junction / Deactivation of the beta-catenin transactivating complex / intraciliary transport / anterograde dendritic transport of neurotransmitter receptor complex / Ovarian tumor domain proteases / microtubule anchoring at centrosome / Kinesins / negative regulation of cell cycle G1/S phase transition / Scrib-APC-beta-catenin complex / cilium movement / inner ear receptor cell stereocilium organization / negative regulation of cyclin-dependent protein serine/threonine kinase activity / photoreceptor connecting cilium / Degradation of beta-catenin by the destruction complex / proximal/distal pattern formation / COPI-dependent Golgi-to-ER retrograde traffic / negative regulation of epithelial cell proliferation involved in prostate gland development / motile cilium assembly / gamma-catenin binding / negative regulation of cardiac muscle cell proliferation / regulation of attachment of spindle microtubules to kinetochore / Hedgehog 'off' state / cell body fiber / cilium organization / positive regulation of pseudopodium assembly / positive regulation of intracellular protein transport / metaphase/anaphase transition of mitotic cell cycle / ribbon synapse / positive regulation of protein localization to centrosome / cell projection membrane / regulation of osteoclast differentiation / pattern specification process / negative regulation of microtubule depolymerization / dentate gyrus development / beta-catenin destruction complex / MHC class II antigen presentation / catenin complex / anterograde axonal transport / microtubule plus-end binding / protein kinase regulator activity / dorsal/ventral pattern formation / non-motile cilium assembly / motile cilium / regulation of microtubule-based process / determination of left/right symmetry / cell fate specification / anterior/posterior pattern specification / neural tube development / neural precursor cell proliferation / protein-containing complex localization / microtubule motor activity / kinesin complex / microtubule-based movement / skin development / dorsal/ventral neural tube patterning / smoothened signaling pathway / spectrin binding / negative regulation of G1/S transition of mitotic cell cycle / muscle cell cellular homeostasis / mitotic spindle assembly checkpoint signaling / regulation of osteoblast differentiation / stem cell population maintenance / positive regulation of cytokinesis / heart looping / forebrain development / neuron projection terminus / ciliary transition zone / establishment or maintenance of cell polarity / negative regulation of Wnt signaling pathway / mitotic cytokinesis / regulation of cell differentiation / positive regulation of cell division / dynein complex binding / somatic stem cell population maintenance / cilium assembly / epidermis development / lateral plasma membrane / hair follicle development / mitotic spindle assembly / bicellular tight junction 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 | |||||||||||||||||||||||||||
データ登録者 | Jiang, X. / Danev, R. / Yanagisawa, H. / Kikkawa, M. | |||||||||||||||||||||||||||
| 資金援助 | 日本, 4件
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引用 | ジャーナル: Sci Adv / 年: 2025タイトル: The hook-like adaptor and cargo-binding (HAC) domain in the kinesin-2 tail enables adaptor assembly and cargo recognition. 著者: Xuguang Jiang / Radostin Danev / Sotaro Ichinose / Baichun Niu / Sumio Ohtsuki / Haruaki Yanagisawa / Satoru Nagatoishi / Kouhei Tsumoto / Nobutaka Hirokawa / Masahide Kikkawa / ![]() 要旨: Intracellular transport relies on motor proteins such as kinesins to deliver cargo along microtubules, yet how they recognize cargo remains unclear. Here, we present high-resolution cryo-electron ...Intracellular transport relies on motor proteins such as kinesins to deliver cargo along microtubules, yet how they recognize cargo remains unclear. Here, we present high-resolution cryo-electron microscopy structures of the heterotrimeric kinesin-2 complex (KIF3A/KIF3B/KAP3) bound to the cargo protein APC. Our findings reveal a previously uncharacterized KIF3 tail hook-like motif, termed the "HAC" domain, which mediates binding to both KAP3 adaptor and APC cargo. Within this domain, the KIF3A helical regions ensure cargo specificity, while a β-hairpin and KIF3B provide structural support. Biochemical and neuronal experiments confirm its functional importance. Notably, the HAC/KAP3 structure resembles hook-like architectures seen in kinesin-1 and dynein, suggesting a shared cargo recognition framework. These findings also shed light on kinesin-2 cargo specificity and offer a structural framework for understanding related neuronal transport mechanisms. | |||||||||||||||||||||||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9w9i.cif.gz | 220.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9w9i.ent.gz | 160.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9w9i.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/w9/9w9i ftp://data.pdbj.org/pub/pdb/validation_reports/w9/9w9i | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 65778MC ![]() 9w9hC 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 F&H 検索 |
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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
| #1: タンパク質 | 分子量: 21084.143 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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| #2: タンパク質 | 分子量: 25440.057 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
| #3: タンパク質 | 分子量: 80224.148 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: 75417.633 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
| Has protein modification | N |
-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: Tetrameric complex of kinesin-2 KIF3A/B/KAP3 and cargo APC タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 値: 0.22 MDa / 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 8 |
| 試料 | 濃度: 0.0375 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
| 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: 279 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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| EM imaging | アライメント法: BASIC / C2レンズ絞り径: 50 µm / 凍結剤: NITROGEN / 電子線源:
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| 電子光学装置 |
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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 | ||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 12833027 | ||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||
| 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: 407310 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: OTHER / 空間: REAL 詳細: Initial local fitting was done using Phenix dock-in-map tool. | ||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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万見について






日本, 4件
引用


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