- EMDB-7811: Subtomogram average (702 axonemal repeats) of isolated Rib72B kno... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-7811
タイトル
Subtomogram average (702 axonemal repeats) of isolated Rib72B knock out Tetrahymena cilia showing the lumen of the ciliary doublet microtubule (DMT)
マップデータ
Rib72B_KO_702
試料
細胞器官・細胞要素: Subtomogram average (702 axonemal repeats) of isolated Rib72B knock out Tetrahymena cilia showing the lumen of the ciliary doublet microtubule (DMT)
ジャーナル: Mol Biol Cell / 年: 2018 タイトル: Tetrahymena RIB72A and RIB72B are microtubule inner proteins in the ciliary doublet microtubules. 著者: Daniel Stoddard / Ying Zhao / Brian A Bayless / Long Gui / Panagiota Louka / Drashti Dave / Swati Suryawanshi / Raphaël F-X Tomasi / Pascale Dupuis-Williams / Charles N Baroud / Jacek ...著者: Daniel Stoddard / Ying Zhao / Brian A Bayless / Long Gui / Panagiota Louka / Drashti Dave / Swati Suryawanshi / Raphaël F-X Tomasi / Pascale Dupuis-Williams / Charles N Baroud / Jacek Gaertig / Mark Winey / Daniela Nicastro / 要旨: Doublet and triplet microtubules are essential and highly stable core structures of centrioles, basal bodies, cilia, and flagella. In contrast to dynamic cytoplasmic micro-tubules, their luminal ...Doublet and triplet microtubules are essential and highly stable core structures of centrioles, basal bodies, cilia, and flagella. In contrast to dynamic cytoplasmic micro-tubules, their luminal surface is coated with regularly arranged microtubule inner proteins (MIPs). However, the protein composition and biological function(s) of MIPs remain poorly understood. Using genetic, biochemical, and imaging techniques, we identified Tetrahymena RIB72A and RIB72B proteins as ciliary MIPs. Fluorescence imaging of tagged RIB72A and RIB72B showed that both proteins colocalize to Tetrahymena cilia and basal bodies but assemble independently. Cryoelectron tomography of RIB72A and/or RIB72B knockout strains revealed major structural defects in the ciliary A-tubule involving MIP1, MIP4, and MIP6 structures. The defects of individual mutants were complementary in the double mutant. All mutants had reduced swimming speed and ciliary beat frequencies, and high-speed video imaging revealed abnormal highly curved cilia during power stroke. Our results show that RIB72A and RIB72B are crucial for the structural assembly of ciliary A-tubule MIPs and are important for proper ciliary motility.
全体 : Subtomogram average (702 axonemal repeats) of isolated Rib72B kno...
全体
名称: Subtomogram average (702 axonemal repeats) of isolated Rib72B knock out Tetrahymena cilia showing the lumen of the ciliary doublet microtubule (DMT)
要素
細胞器官・細胞要素: Subtomogram average (702 axonemal repeats) of isolated Rib72B knock out Tetrahymena cilia showing the lumen of the ciliary doublet microtubule (DMT)
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超分子 #1: Subtomogram average (702 axonemal repeats) of isolated Rib72B kno...
超分子
名称: Subtomogram average (702 axonemal repeats) of isolated Rib72B knock out Tetrahymena cilia showing the lumen of the ciliary doublet microtubule (DMT) タイプ: organelle_or_cellular_component / ID: 1 / 親要素: 0
由来(天然)
生物種: Tetrahymena thermophila (真核生物) / 株: Rib72B KO