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10.1016/j.jtbi.2020.110425

http://scihub22266oqcxt.onion/10.1016/j.jtbi.2020.110425
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suck abstract from ncbi


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pmid32735992      J+Theor+Biol 2020 ; 505 (ä): 110425
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  • Design of an engineered ACE2 as a novel therapeutics against COVID-19 #MMPMID32735992
  • Payandeh Z; Rahbar MR; Jahangiri A; Hashemi ZS; Zakeri A; Jafarisani M; Rasaee MJ; Khalili S
  • J Theor Biol 2020[Nov]; 505 (ä): 110425 PMID32735992show ga
  • The interaction between the angiotensin-converting enzyme 2 (ACE2) and the receptor binding domain (RBD) of the spike protein from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) plays a pivotal role in virus entry into the host cells. Since recombinant ACE2 protein has been suggested as an anti-SARS-CoV-2 therapeutic agent, this study was conducted to design an ACE2 protein with more desirable properties. In this regard, the amino acids with central roles in enzymatic activity of the ACE2 were substituted. Moreover, saturation mutagenesis at the interaction interface between the ACE2 and RBD was performed to increase their interaction affinity. The best mutations to increase the structural and thermal stability of the ACE2 were also selected based on B factors and mutation effects. The obtained resulted revealed that the Arg273Gln and Thr445Gly mutation have drastically reduced the binding affinity of the angiotensin-II into the active site of ACE2. The Thr27Arg mutation was determined to be the most potent mutation to increase the binding affinity. The Asp427Arg mutation was done to decrease the flexibility of the region with high B factor. The Pro451Met mutation along with the Gly448Trp mutation was predicted to increase the thermodynamic stability and thermostability of the ACE2. The designed therapeutic ACE2 would have no enzymatic activity while it could bear stronger interaction with Spike glycoprotein of the SARS-CoV-2. Moreover, decreased in vivo enzymatic degradation would be anticipated due to increased thermostability. This engineered ACE2 could be exploited as a novel therapeutic agent against COVID-19 after necessary evaluations.
  • |*Drug Design[MESH]
  • |Amino Acid Substitution[MESH]
  • |Angiotensin-Converting Enzyme 2[MESH]
  • |Betacoronavirus/genetics/*metabolism[MESH]
  • |Binding Sites[MESH]
  • |COVID-19[MESH]
  • |Coronavirus Infections/*drug therapy[MESH]
  • |Directed Molecular Evolution[MESH]
  • |Humans[MESH]
  • |Pandemics[MESH]
  • |Peptidyl-Dipeptidase A/*genetics/*metabolism/therapeutic use[MESH]
  • |Pneumonia, Viral/*drug therapy[MESH]
  • |Protein Binding[MESH]
  • |Protein Engineering/*methods[MESH]
  • |Protein Interaction Domains and Motifs/genetics[MESH]
  • |Protein Stability[MESH]
  • |SARS-CoV-2[MESH]


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