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Structural basis for SARS-CoV-2 envelope protein recognition of human cell junction protein PALS1

Author

Listed:
  • Jin Chai

    (Brookhaven National Laboratory)

  • Yuanheng Cai

    (Stony Brook University)

  • Changxu Pang

    (Brookhaven National Laboratory)

  • Liguo Wang

    (Brookhaven National Laboratory)

  • Sean McSweeney

    (Brookhaven National Laboratory)

  • John Shanklin

    (Brookhaven National Laboratory
    Stony Brook University)

  • Qun Liu

    (Brookhaven National Laboratory
    Brookhaven National Laboratory)

Abstract

The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has created global health and economic emergencies. SARS-CoV-2 viruses promote their own spread and virulence by hijacking human proteins, which occurs through viral protein recognition of human targets. To understand the structural basis for SARS-CoV-2 viral-host protein recognition, here we use cryo-electron microscopy (cryo-EM) to determine a complex structure of the human cell junction protein PALS1 and SARS-CoV-2 viral envelope (E) protein. Our reported structure shows that the E protein C-terminal DLLV motif recognizes a pocket formed exclusively by hydrophobic residues from the PDZ and SH3 domains of PALS1. Our structural analysis provides an explanation for the observation that the viral E protein recruits PALS1 from lung epithelial cell junctions. In addition, our structure provides novel targets for peptide- and small-molecule inhibitors that could block the PALS1-E interactions to reduce E-mediated virulence.

Suggested Citation

  • Jin Chai & Yuanheng Cai & Changxu Pang & Liguo Wang & Sean McSweeney & John Shanklin & Qun Liu, 2021. "Structural basis for SARS-CoV-2 envelope protein recognition of human cell junction protein PALS1," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23533-x
    DOI: 10.1038/s41467-021-23533-x
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    Cited by:

    1. Lei Liu & Lijingyao Zhang & Xinyan Hao & Yang Wang & Xiaochun Zhang & Liang Ge & Peihui Wang & Boxue Tian & Min Zhang, 2024. "Coronavirus envelope protein activates TMED10-mediated unconventional secretion of inflammatory factors," Nature Communications, Nature, vol. 15(1), pages 1-16, December.

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