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Structure of the mechanically activated ion channel Piezo1

Author

Listed:
  • Kei Saotome

    (Howard Hughes Medical Institute, The Scripps Research Institute, La Jolla
    The Scripps Research Institute, La Jolla)

  • Swetha E. Murthy

    (Howard Hughes Medical Institute, The Scripps Research Institute, La Jolla)

  • Jennifer M. Kefauver

    (Howard Hughes Medical Institute, The Scripps Research Institute, La Jolla
    The Scripps Research Institute, La Jolla)

  • Tess Whitwam

    (Howard Hughes Medical Institute, The Scripps Research Institute, La Jolla)

  • Ardem Patapoutian

    (Howard Hughes Medical Institute, The Scripps Research Institute, La Jolla)

  • Andrew B. Ward

    (The Scripps Research Institute, La Jolla)

Abstract

Piezo1 and Piezo2 are mechanically activated ion channels that mediate touch perception, proprioception and vascular development. Piezo proteins are distinct from other ion channels and their structure remains poorly defined, which impedes detailed study of their gating and ion permeation properties. Here we report a high-resolution cryo-electron microscopy structure of the mouse Piezo1 trimer. The detergent-solubilized complex adopts a three-bladed propeller shape with a curved transmembrane region containing at least 26 transmembrane helices per protomer. The flexible propeller blades can adopt distinct conformations, and consist of a series of four-transmembrane helical bundles that we term Piezo repeats. Carboxy-terminal domains line the central ion pore, and the channel is closed by constrictions in the cytosol. A kinked helical beam and anchor domain link the Piezo repeats to the pore, and are poised to control gating allosterically. The structure provides a foundation to dissect further how Piezo channels are regulated by mechanical force.

Suggested Citation

  • Kei Saotome & Swetha E. Murthy & Jennifer M. Kefauver & Tess Whitwam & Ardem Patapoutian & Andrew B. Ward, 2018. "Structure of the mechanically activated ion channel Piezo1," Nature, Nature, vol. 554(7693), pages 481-486, February.
    • Handle: RePEc:nat:nature:v:554:y:2018:i:7693:d:10.1038_nature25453
    DOI: 10.1038/nature25453
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    Cited by:

    1. Jingying Zhang & Grigory Maksaev & Peng Yuan, 2023. "Open structure and gating of the Arabidopsis mechanosensitive ion channel MSL10," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Shilong Yang & Xinwen Miao & Steven Arnold & Boxuan Li & Alan T. Ly & Huan Wang & Matthew Wang & Xiangfu Guo & Medha M. Pathak & Wenting Zhao & Charles D. Cox & Zheng Shi, 2022. "Membrane curvature governs the distribution of Piezo1 in live cells," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    3. Kenjiro Yoshimura & Kazuko Iida & Hidetoshi Iida, 2021. "MCAs in Arabidopsis are Ca2+-permeable mechanosensitive channels inherently sensitive to membrane tension," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    4. Johanna L. Syrjänen & Max Epstein & Ricardo Gómez & Hiro Furukawa, 2023. "Structure of human CALHM1 reveals key locations for channel regulation and blockade by ruthenium red," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    5. Xin-yu He & Xiao Fan & Lei Qu & Xiang Wang & Li Jiang & Ling-jie Sang & Cheng-yu Shi & Siyi Lin & Jie-cheng Yang & Zuo-zhen Yang & Kai Lei & Jun-hong Li & Huai-qiang Ju & Qingfeng Yan & Jian Liu & Fud, 2023. "LncRNA modulates Hippo-YAP signaling to reprogram iron metabolism," Nature Communications, Nature, vol. 14(1), pages 1-17, December.
    6. Jonathan Mount & Grigory Maksaev & Brock T. Summers & James A. J. Fitzpatrick & Peng Yuan, 2022. "Structural basis for mechanotransduction in a potassium-dependent mechanosensitive ion channel," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    7. Francisco Andrés Peralta & Mélaine Balcon & Adeline Martz & Deniza Biljali & Federico Cevoli & Benoit Arnould & Antoine Taly & Thierry Chataigneau & Thomas Grutter, 2023. "Optical control of PIEZO1 channels," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    8. Amandeep Kaur & Madhu & Alok Sharma & Kashmir Singh & Santosh Kumar Upadhyay, 2023. "Exploration of Piezo Channels in Bread Wheat ( Triticum aestivum L.)," Agriculture, MDPI, vol. 13(4), pages 1-16, March.
    9. Nathalia G. Amado & Elena D. Nosyreva & David Thompson & Thomas J. Egeland & Osita W. Ogujiofor & Michelle Yang & Alexandria N. Fusco & Niccolo Passoni & Jeremy Mathews & Brandi Cantarel & Linda A. Ba, 2024. "PIEZO1 loss-of-function compound heterozygous mutations in the rare congenital human disorder Prune Belly Syndrome," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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