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10.3390/ijms23105601

http://scihub22266oqcxt.onion/10.3390/ijms23105601
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35628409!9144871!35628409
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suck abstract from ncbi


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pmid35628409      Int+J+Mol+Sci 2022 ; 23 (10): ä
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  • Structure-Based Development of SARS-CoV-2 Spike Interactors #MMPMID35628409
  • Squeglia F; Romano M; Esposito L; Barra G; Campiglia P; Sala M; Scala MC; Ruggiero A; Berisio R
  • Int J Mol Sci 2022[May]; 23 (10): ä PMID35628409show ga
  • Coronaviruses, including SARS-CoV-2 (the etiological agent of the current COVID-19 pandemic), rely on the surface spike glycoprotein to access the host cells, mainly through the interaction of their receptor-binding domain (RBD) with the human angiotensin-converting enzyme 2 (ACE2). Therefore, molecular entities able to interfere with the binding of the SARS-CoV-2 spike protein to ACE2 have great potential to inhibit viral entry. Starting from the available structural data on the interaction between SARS-CoV-2 spike protein and the host ACE2 receptor, we engineered a set of soluble and stable spike interactors, here denoted as S-plugs. Starting from the prototype S-plug, we adopted a computational approach by combining stability prediction, associated to single-point mutations, with molecular dynamics to enhance both S-plug thermostability and binding affinity to the spike protein. The best developed molecule, S-plug3, possesses a highly stable alpha-helical con-formation (with melting temperature Tm of 54 degrees C) and can interact with the spike RBD and S1 domains with similar low nanomolar affinities. Importantly, S-plug3 exposes the spike RBD to almost the same interface as the human ACE2 receptor, aimed at the recognition of all ACE2-accessing coronaviruses. Consistently, S-plug3 preserves a low nanomolar dissociation constant with the delta B.1.617.2 variant of SARS-CoV-2 spike protein (K(D) = 29.2 +/- 0.6 nM). Taken together, we provide valid starting data for the development of therapeutical and diagnostic tools against coronaviruses accessing through ACE2.
  • |*Angiotensin-Converting Enzyme 2/genetics[MESH]
  • |*COVID-19[MESH]
  • |Humans[MESH]
  • |Membrane Glycoproteins/metabolism[MESH]
  • |Pandemics[MESH]
  • |Peptidyl-Dipeptidase A/metabolism[MESH]
  • |SARS-CoV-2[MESH]
  • |Spike Glycoprotein, Coronavirus[MESH]


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