Cilia / Complex / Signal transducer. / STRUCTURAL PROTEIN
機能・相同性
機能・相同性情報
radial spoke assembly / maintenance of ciliary planar beating movement pattern / radial spoke head 1 / radial spoke head 2 / radial spoke head 3 / outer dense fiber / radial spoke head / mating / axonemal central apparatus assembly / radial spoke ...radial spoke assembly / maintenance of ciliary planar beating movement pattern / radial spoke head 1 / radial spoke head 2 / radial spoke head 3 / outer dense fiber / radial spoke head / mating / axonemal central apparatus assembly / radial spoke / kinocilium / epithelial cilium movement involved in extracellular fluid movement / cilium movement involved in cell motility / 9+2 motile cilium / cilium movement / axoneme assembly / flagellated sperm motility / meiotic spindle / motile cilium / spermatid development / sperm flagellum / axoneme / condensed nuclear chromosome / meiotic cell cycle / establishment of localization in cell / extracellular region / cytoplasm 類似検索 - 分子機能
Radial spokehead-like protein / : / Radial spokehead-like protein / Possible plasma membrane-binding motif in junctophilins, PIP-5-kinases and protein kinases. / MORN motif / MORN repeat 類似検索 - ドメイン・相同性
Radial spoke head protein 4 homolog A / Radial spoke head 1 homolog / Radial spoke head protein 9 homolog 類似検索 - 構成要素
National Natural Science Foundation of China (NSFC)
中国
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2021 タイトル: Distinct architecture and composition of mouse axonemal radial spoke head revealed by cryo-EM. 著者: Wei Zheng / Fan Li / Zhanyu Ding / Hao Liu / Lei Zhu / Cong Xu / Jiawei Li / Qi Gao / Yanxing Wang / Zhenglin Fu / Chao Peng / Xiumin Yan / Xueliang Zhu / Yao Cong / 要旨: The radial spoke (RS) heads of motile cilia and flagella contact projections of the central pair (CP) apparatus to coordinate motility, but the morphology is distinct for protozoa and metazoa. Here ...The radial spoke (RS) heads of motile cilia and flagella contact projections of the central pair (CP) apparatus to coordinate motility, but the morphology is distinct for protozoa and metazoa. Here we show the murine RS head is compositionally distinct from that of Our reconstituted murine RS head core complex consists of Rsph1, Rsph3b, Rsph4a, and Rsph9, lacking Rsph6a and Rsph10b, whose orthologs exist in the protozoan RS head. We resolve its cryo-electron microscopy (cryo-EM) structure at 3.2-Å resolution. Our atomic model further reveals a twofold symmetric brake pad-shaped structure, in which Rsph4a and Rsph9 form a compact body extended laterally with two long arms of twisted Rsph1 β-sheets and potentially connected dorsally via Rsph3b to the RS stalk. Furthermore, our modeling suggests that the core complex contacts the periodic CP projections either rigidly through its tooth-shaped Rsph4a regions or elastically through both arms for optimized RS-CP interactions and mechanosignal transduction.