IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v11y2020i1d10.1038_s41467-020-16975-2.html
   My bibliography  Save this article

Structural mechanism underlying primary and secondary coupling between GPCRs and the Gi/o family

Author

Listed:
  • Hee Ryung Kim

    (School of Pharmacy, Sungkyunkwan University)

  • Jun Xu

    (Beijing Advanced Innovation Center for Structural Biology, School of Medicine, Tsinghua University)

  • Shoji Maeda

    (Stanford University)

  • Nguyen Minh Duc

    (School of Pharmacy, Sungkyunkwan University
    Division of Precision Medicine, Research Institute, National Cancer Center)

  • Donghoon Ahn

    (School of Pharmacy, Sungkyunkwan University)

  • Yang Du

    (School of Life and Health Sciences, Kobilka Institute of Innovative Drug Discovery, Chinese University of Hong Kong)

  • Ka Young Chung

    (School of Pharmacy, Sungkyunkwan University)

Abstract

Heterotrimeric G proteins are categorized into four main families based on their function and sequence, Gs, Gi/o, Gq/11, and G12/13. One receptor can couple to more than one G protein subtype, and the coupling efficiency varies depending on the GPCR-G protein pair. However, the precise mechanism underlying different coupling efficiencies is unknown. Here, we study the structural mechanism underlying primary and secondary Gi/o coupling, using the muscarinic acetylcholine receptor type 2 (M2R) as the primary Gi/o-coupling receptor and the β2-adrenergic receptor (β2AR, which primarily couples to Gs) as the secondary Gi/o-coupling receptor. Hydrogen/deuterium exchange mass spectrometry and mutagenesis studies reveal that the engagement of the distal C-terminus of Gαi/o with the receptor differentiates primary and secondary Gi/o couplings. This study suggests that the conserved hydrophobic residue within the intracellular loop 2 of the receptor (residue 34.51) is not critical for primary Gi/o-coupling; however, it might be important for secondary Gi/o-coupling.

Suggested Citation

  • Hee Ryung Kim & Jun Xu & Shoji Maeda & Nguyen Minh Duc & Donghoon Ahn & Yang Du & Ka Young Chung, 2020. "Structural mechanism underlying primary and secondary coupling between GPCRs and the Gi/o family," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16975-2
    DOI: 10.1038/s41467-020-16975-2
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-020-16975-2
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-020-16975-2?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jia Duan & Dan-Dan Shen & Tingting Zhao & Shimeng Guo & Xinheng He & Wanchao Yin & Peiyu Xu & Yujie Ji & Li-Nan Chen & Jinyu Liu & Huibing Zhang & Qiufeng Liu & Yi Shi & Xi Cheng & Hualiang Jiang & H., 2022. "Molecular basis for allosteric agonism and G protein subtype selectivity of galanin receptors," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Andrew J. Y. Jones & Thomas H. Harman & Matthew Harris & Oliver E. Lewis & Graham Ladds & Daniel Nietlispach, 2024. "Binding kinetics drive G protein subtype selectivity at the β1-adrenergic receptor," Nature Communications, Nature, vol. 15(1), pages 1-17, December.
    3. Sathvik Anantakrishnan & Athi N. Naganathan, 2023. "Thermodynamic architecture and conformational plasticity of GPCRs," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    4. Marin Matic & Pasquale Miglionico & Manae Tatsumi & Asuka Inoue & Francesco Raimondi, 2023. "GPCRome-wide analysis of G-protein-coupling diversity using a computational biology approach," Nature Communications, Nature, vol. 14(1), pages 1-17, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16975-2. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.