- EMDB-24210: The 3D structure and in situ arrangements of CatSper channel from... -
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データベース: EMDB / ID: EMD-24210
タイトル
The 3D structure and in situ arrangements of CatSper channel from the cryo-electron tomography and subtomographic average of mouse wild type sperm flagella
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)
R01HD096745
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM083122
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
RR140082
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM111802
米国
Department of Energy (DOE, United States)
DE-AC02-O5CH11231
米国
German Research Foundation (DFG)
2344/9-3
ドイツ
引用
ジャーナル: Nat Commun / 年: 2022 タイトル: 3D structure and in situ arrangements of CatSper channel in the sperm flagellum. 著者: Yanhe Zhao / Huafeng Wang / Caroline Wiesehoefer / Naman B Shah / Evan Reetz / Jae Yeon Hwang / Xiaofang Huang / Tse-En Wang / Polina V Lishko / Karen M Davies / Gunther Wennemuth / Daniela ...著者: Yanhe Zhao / Huafeng Wang / Caroline Wiesehoefer / Naman B Shah / Evan Reetz / Jae Yeon Hwang / Xiaofang Huang / Tse-En Wang / Polina V Lishko / Karen M Davies / Gunther Wennemuth / Daniela Nicastro / Jean-Ju Chung / 要旨: The sperm calcium channel CatSper plays a central role in successful fertilization as a primary Ca gateway. Here, we applied cryo-electron tomography to visualize the higher-order organization of the ...The sperm calcium channel CatSper plays a central role in successful fertilization as a primary Ca gateway. Here, we applied cryo-electron tomography to visualize the higher-order organization of the native CatSper complex in intact mammalian sperm. The repeating CatSper units form long zigzag-rows along mouse and human sperm flagella. Above each tetrameric channel pore, most of the extracellular domains form a canopy that interconnects to a zigzag-shaped roof. Murine CatSper contains an additional wing-structure connected to the tetrameric channel. The intracellular domains link two neighboring channels to a diagonal array, suggesting a dimer formation. Fitting of an atomic model of isolated monomeric CatSper to the in situ map reveals supramolecular interactions and assembly of the CatSper complex. Loss of EFCAB9-CATSPERζ alters the architecture and interactions of the channels, resulting in fragmentation and misalignment of the zigzag-rows and disruption of flagellar movement in Efcab9 sperm. This work offers unique insights into the structural basis for understanding CatSper regulation of sperm motility.
想定した対称性 - 点群: C2 (2回回転対称) / アルゴリズム: BACK PROJECTION / 解像度のタイプ: BY AUTHOR / 解像度: 16.8 Å / 解像度の算出法: OTHER 詳細: Gold standard, but resolution was reported at two cut-offs: 16.8 (0.143) and 25.8 (0.5). 使用したサブトモグラム数: 2542