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10.1016/j.isci.2021.102770

http://scihub22266oqcxt.onion/10.1016/j.isci.2021.102770
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suck abstract from ncbi


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pmid34189428      iScience 2021 ; 24 (7): 102770
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  • ACE2 interaction with cytoplasmic PDZ protein enhances SARS-CoV-2 invasion #MMPMID34189428
  • Zhang Q; Gefter J; Sneddon WB; Mamonova T; Friedman PA
  • iScience 2021[Jul]; 24 (7): 102770 PMID34189428show ga
  • SARS-CoV-2 is responsible for the global COVID-19 pandemic. Angiotensin converting enzyme 2 (ACE2) is the membrane-delimited receptor for SARS-CoV-2. Lung, intestine, and kidney, major sites of viral infection, express ACE2 that harbors an intracellular, carboxy-terminal PDZ-recognition motif. These organs prominently express the PDZ protein Na(+)/H(+) exchanger regulatory factor-1 (NHERF1). Here, we report NHERF1 tethers ACE2 and augments SARS-CoV-2 cell entry. ACE2 directly binds both NHERF1 PDZ domains. Disruption of either NHERF1 PDZ core-binding motif or the ACE2 PDZ recognition sequence eliminates interaction. Proximity ligation assays establish that ACE2 and NHERF1 interact at constitutive expression levels in human lung and intestine cells. Ablating ACE2 interaction with NHERF1 accelerated SARS-CoV-2 cell entry. Conversely, elimination of the ACE2 C-terminal PDZ-binding motif decreased ACE2 membrane residence and reduced pseudotyped virus entry. We conclude that the PDZ interaction of ACE2 with NHERF1 facilitates SARS-CoV-2 internalization. beta-Arrestin is likely indispensable, as with G protein-coupled receptors.
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