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基本情報
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タイトル | In situ structure of axonemal doublet microtubules in mouse sperm with 16-nm repeat | |||||||||
![]() | Axonemal doublet microtubules in mouse sperm with 16-nm repeat | |||||||||
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![]() | microtubules / axoneme / sperm / filament / STRUCTURAL PROTEIN | |||||||||
機能・相同性 | ![]() male germ-line stem cell population maintenance / axonemal microtubule doublet inner sheath / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Sealing of the nuclear envelope (NE) by ESCRT-III / outer acrosomal membrane / regulation of brood size / establishment of left/right asymmetry / 9+0 motile cilium / axonemal B tubule inner sheath ...male germ-line stem cell population maintenance / axonemal microtubule doublet inner sheath / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Sealing of the nuclear envelope (NE) by ESCRT-III / outer acrosomal membrane / regulation of brood size / establishment of left/right asymmetry / 9+0 motile cilium / axonemal B tubule inner sheath / axonemal A tubule inner sheath / Intraflagellar transport / manchette / Carboxyterminal post-translational modifications of tubulin / protein polyglutamylation / inner dynein arm assembly / positive regulation of feeding behavior / COPI-independent Golgi-to-ER retrograde traffic / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MAP kinase tyrosine/serine/threonine phosphatase activity / sperm principal piece / regulation of cilium beat frequency involved in ciliary motility / cilium movement involved in cell motility / protein localization to organelle / COPI-mediated anterograde transport / Aggrephagy / 9+2 motile cilium / Kinesins / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / acrosomal membrane / microtubule sliding / Resolution of Sister Chromatid Cohesion / PKR-mediated signaling / The role of GTSE1 in G2/M progression after G2 checkpoint / RHO GTPases activate IQGAPs / Recycling pathway of L1 / axoneme assembly / COPI-dependent Golgi-to-ER retrograde traffic / axonemal microtubule / RHO GTPases Activate Formins / Separation of Sister Chromatids / Hedgehog 'off' state / cilium organization / Loss of Nlp from mitotic centrosomes / Recruitment of mitotic centrosome proteins and complexes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / Regulation of PLK1 Activity at G2/M Transition / flagellated sperm motility / cell projection organization / MHC class II antigen presentation / protein targeting to membrane / protein targeting to mitochondrion / extrinsic component of membrane / positive regulation of cell motility / tubulin complex / histone H2AXS139 phosphatase activity / RNA polymerase II CTD heptapeptide repeat Y1 phosphatase activity / RNA polymerase II CTD heptapeptide repeat T4 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S2 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S5 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S7 phosphatase activity / MAP kinase serine/threonine phosphatase activity / calmodulin-dependent protein phosphatase activity / myosin phosphatase activity / protein-serine/threonine phosphatase / ciliary base / beta-tubulin binding / spermatid development / phosphatase activity / microtubule organizing center / regulation of cell division / mitotic cytokinesis / phosphoprotein phosphatase activity / sperm flagellum / axoneme / cilium assembly / glial cell projection / single fertilization / alpha-tubulin binding / cellular response to unfolded protein / microtubule-based process / intercellular bridge / cytoplasmic microtubule / sperm midpiece / Neutrophil degranulation / protein tyrosine phosphatase activity, metal-dependent / histone H2AXY142 phosphatase activity / non-membrane spanning protein tyrosine phosphatase activity / centriole / protein-tyrosine-phosphatase / Hsp70 protein binding / cellular response to leukemia inhibitory factor / acrosomal vesicle / mitotic spindle organization / Hsp90 protein binding / G protein-coupled receptor binding 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | サブトモグラム平均法 / クライオ電子顕微鏡法 / 解像度: 4.5 Å | |||||||||
![]() | Zhu Y / Yin GL / Tai LH / Sun F | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: In-cell structural insight into the stability of sperm microtubule doublet. 著者: Linhua Tai / Guoliang Yin / Xiaojun Huang / Fei Sun / Yun Zhu / ![]() 要旨: The propulsion for mammalian sperm swimming is generated by flagella beating. Microtubule doublets (DMTs) along with microtubule inner proteins (MIPs) are essential structural blocks of flagella. ...The propulsion for mammalian sperm swimming is generated by flagella beating. Microtubule doublets (DMTs) along with microtubule inner proteins (MIPs) are essential structural blocks of flagella. However, the intricate molecular architecture of intact sperm DMT remains elusive. Here, by in situ cryo-electron tomography, we solved the in-cell structure of mouse sperm DMT at 4.5-7.5 Å resolutions, and built its model with 36 kinds of MIPs in 48 nm periodicity. We identified multiple copies of Tektin5 that reinforce Tektin bundle, and multiple MIPs with different periodicities that anchor the Tektin bundle to tubulin wall. This architecture contributes to a superior stability of A-tubule than B-tubule of DMT, which was revealed by structural comparison of DMTs from the intact and deformed axonemes. Our work provides an overall molecular picture of intact sperm DMT in 48 nm periodicity that is essential to understand the molecular mechanism of sperm motility as well as the related ciliopathies. | |||||||||
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画像 | ![]() | 190.2 KB | ||
Filedesc metadata | ![]() | 12.5 KB | ||
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-検証レポート
文書・要旨 | ![]() | 785.2 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 784.7 KB | 表示 | |
XML形式データ | ![]() | 6.5 KB | 表示 | |
CIF形式データ | ![]() | 7.5 KB | 表示 | |
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-関連構造データ
関連構造データ | ![]() 8i7oMC ![]() 8i7rC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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「今月の分子」の関連する項目 |
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ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Axonemal doublet microtubules in mouse sperm with 16-nm repeat | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.76 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
+全体 : mouse sperm
+超分子 #1: mouse sperm
+分子 #1: Tektin-1
+分子 #2: Detyrosinated tubulin alpha-3 chain
+分子 #3: Tubulin beta-4B chain
+分子 #4: Tektin-2
+分子 #5: Tektin-3
+分子 #6: Tektin-4
+分子 #7: Tektin bundle-interacting protein 1
+分子 #8: Tektin-5
+分子 #9: EF-hand domain-containing protein 1
+分子 #10: EF-hand domain-containing family member C2
+分子 #11: Protein FAM166A
+分子 #12: Protein FAM166C
+分子 #13: Dual specificity phosphatase 21
+分子 #14: Coiled-coil domain-containing protein 105
+分子 #15: Enkurin
+分子 #16: Testis-expressed protein 43
+分子 #17: Cilia- and flagella-associated protein 276
+分子 #18: Protein Flattop
+分子 #19: Cilia- and flagella-associated protein 52
+分子 #20: EF-hand calcium-binding domain-containing protein 6
+分子 #21: Cilia and flagella-associated protein 77
+分子 #22: Cilia- and flagella-associated protein 20
+分子 #23: Parkin coregulated gene protein homolog
+分子 #24: Sperm acrosome-associated protein 9
+分子 #25: GUANOSINE-5'-TRIPHOSPHATE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | サブトモグラム平均法 |
試料の集合状態 | cell |
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試料調製
緩衝液 | pH: 7 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) 検出モード: SUPER-RESOLUTION / 平均電子線量: 3.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 5.0 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用したサブトモグラム数: 37018 |
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抽出 | トモグラム数: 689 / 使用した粒子像数: 37018 |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |