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Structure of the TRPV1 ion channel determined by electron cryo-microscopy

Author

Listed:
  • Maofu Liao

    (Keck Advanced Microscopy Laboratory, University of California)

  • Erhu Cao

    (University of California)

  • David Julius

    (University of California)

  • Yifan Cheng

    (Keck Advanced Microscopy Laboratory, University of California)

Abstract

Transient receptor potential (TRP) channels are sensors for a wide range of cellular and environmental signals, but elucidating how these channels respond to physical and chemical stimuli has been hampered by a lack of detailed structural information. Here we exploit advances in electron cryo-microscopy to determine the structure of a mammalian TRP channel, TRPV1, at 3.4 Å resolution, breaking the side-chain resolution barrier for membrane proteins without crystallization. Like voltage-gated channels, TRPV1 exhibits four-fold symmetry around a central ion pathway formed by transmembrane segments 5–6 (S5–S6) and the intervening pore loop, which is flanked by S1–S4 voltage-sensor-like domains. TRPV1 has a wide extracellular ‘mouth’ with a short selectivity filter. The conserved ‘TRP domain’ interacts with the S4–S5 linker, consistent with its contribution to allosteric modulation. Subunit organization is facilitated by interactions among cytoplasmic domains, including amino-terminal ankyrin repeats. These observations provide a structural blueprint for understanding unique aspects of TRP channel function.

Suggested Citation

  • Maofu Liao & Erhu Cao & David Julius & Yifan Cheng, 2013. "Structure of the TRPV1 ion channel determined by electron cryo-microscopy," Nature, Nature, vol. 504(7478), pages 107-112, December.
    • Handle: RePEc:nat:nature:v:504:y:2013:i:7478:d:10.1038_nature12822
    DOI: 10.1038/nature12822
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    Cited by:

    1. Ruth A. Pumroy & Anna D. Protopopova & Tabea C. Fricke & Iris U. Lange & Ferdinand M. Haug & Phuong T. Nguyen & Pamela N. Gallo & Bárbara B. Sousa & Gonçalo J. L. Bernardes & Vladimir Yarov-Yarovoy & , 2022. "Structural insights into TRPV2 activation by small molecules," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Ringsmuth, Andrew K. & Landsberg, Michael J. & Hankamer, Ben, 2016. "Can photosynthesis enable a global transition from fossil fuels to solar fuels, to mitigate climate change and fuel-supply limitations?," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 134-163.
    3. Barbara Storti & Carmine Di Rienzo & Francesco Cardarelli & Ranieri Bizzarri & Fabio Beltram, 2015. "Unveiling TRPV1 Spatio-Temporal Organization in Live Cell Membranes," PLOS ONE, Public Library of Science, vol. 10(3), pages 1-17, March.
    4. Do Hoon Kwon & Feng Zhang & Justin G. Fedor & Yang Suo & Seok-Yong Lee, 2022. "Vanilloid-dependent TRPV1 opening trajectory from cryoEM ensemble analysis," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    5. Maxim V Nikolaev & Natalia A Dorofeeva & Margarita S Komarova & Yuliya V Korolkova & Yaroslav A Andreev & Irina V Mosharova & Eugene V Grishin & Denis B Tikhonov & Sergey A Kozlov, 2017. "TRPV1 activation power can switch an action mode for its polypeptide ligands," PLOS ONE, Public Library of Science, vol. 12(5), pages 1-16, May.
    6. Arthur Neuberger & Mai Oda & Yury A. Nikolaev & Kirill D. Nadezhdin & Elena O. Gracheva & Sviatoslav N. Bagriantsev & Alexander I. Sobolevsky, 2023. "Human TRPV1 structure and inhibition by the analgesic SB-366791," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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