Article: De novo design of protein peptides to block association of the SARS-CoV-2 spike protein with human ACE2
Aging (Albany NY)
Abstract: ... to date. Built on the fact that SARS-CoV-2 initiates its entry into human cells by the receptor binding ... to the SARS-CoV-2 RBD to inhibit the virus from entering human cells. The protocol starts ... simulations of the peptide sequence to optimize its binding affinity to the interface of the SARS-CoV-2 RBD ...
| Abstract | The outbreak of COVID-19 has now become a global pandemic that has severely impacted lives and economic stability. There is, however, no effective antiviral drug that can be used to treat COVID-19 to date. Built on the fact that SARS-CoV-2 initiates its entry into human cells by the receptor binding domain (RBD) of its spike protein binding to the angiotensin-converting enzyme 2 (hACE2), we extended a recently developed approach, EvoDesign, to design multiple peptide sequences that can competitively bind to the SARS-CoV-2 RBD to inhibit the virus from entering human cells. The protocol starts with the construction of a hybrid peptidic scaffold by linking two fragments grafted from the interface of the hACE2 protein (a.a. 22-44 and 351-357) with a linker glycine, which is followed by the redesign and refinement simulations of the peptide sequence to optimize its binding affinity to the interface of the SARS-CoV-2 RBD. The binding experiment analyses showed that the designed peptides exhibited a significantly stronger binding potency to hACE2 than the wild-type hACE2 receptor (with -53.35 vs. -46.46 EvoEF2 energy unit scores for the top designed and wild-type peptides, respectively). This study demonstrates a new avenue to utilize computationally designed peptide motifs to treat the COVID-19 disease by blocking the critical spike-RBD and hACE2 interactions. |
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| Keywords | covid19 |
| Publisher | WHO |
| Document type | Article |
| Note | WHO #Covidence: #601536 |
| Database | COVID19 |
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