PMID- 34008647 OWN - NLM STAT- MEDLINE DCOM- 20210615 LR - 20220816 IS - 1463-9084 (Electronic) IS - 1463-9076 (Linking) VI - 23 IP - 22 DP - 2021 Jun 9 TI - Antiviral drug design based on the opening mechanism of spike glycoprotein in SARS-CoV-2. PG - 12549-12558 LID - 10.1039/d1cp01045j [doi] AB - The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) enters the host cell after the receptor binding domain (RBD) of the virus spike (S) glycoprotein binds to the human angiotensin-converting enzyme 2 (hACE2). This binding requires the RBD to undergo a conformational change from a closed to an open state. In the present study, a key pair of salt bridges formed by the side chains of K537 and E619, residues at the interfaces of SD1 and SD2, respectively, was identified to promote the opening of the RBD. Mutations of K537Q and E619D reduced their side chain lengths and eliminated this pair of salt bridges; as a result, the opening of the RBD was not observed in the MD simulations. Thus, blocking the formation of this pair of salt bridges is a promising approach for treating novel coronavirus disease 2019 (COVID-19). FDA approved drug molecules were screened by their capabilities of blocking the formation of the key pair of salt bridges, achieved by their positional stabilities in the cavity containing the side chains of K537 and E619 formed in the interface between SD1 and SD2. Simeprevir, imatinib, and naldemedine were identified to possess the desired capability with the most favorable interaction energies. FAU - Mao, Ruichao AU - Mao R AUID- ORCID: 0000-0002-5494-7465 AD - Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, Hubei 430070, China. gaojun@mail.hzau.edu.cn. FAU - Bie, Lihua AU - Bie L AUID- ORCID: 0000-0002-3334-493X AD - Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, Hubei 430070, China. gaojun@mail.hzau.edu.cn. FAU - Xu, Maofeng AU - Xu M AD - Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, Hubei 430070, China. gaojun@mail.hzau.edu.cn. FAU - Wang, Xiaocong AU - Wang X AUID- ORCID: 0000-0002-5387-7389 AD - Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, Hubei 430070, China. gaojun@mail.hzau.edu.cn. FAU - Gao, Jun AU - Gao J AUID- ORCID: 0000-0002-6692-1828 AD - Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, Hubei 430070, China. gaojun@mail.hzau.edu.cn. LA - eng PT - Journal Article PL - England TA - Phys Chem Chem Phys JT - Physical chemistry chemical physics : PCCP JID - 100888160 RN - 0 (Antiviral Agents) RN - 0 (Spike Glycoprotein, Coronavirus) RN - 0 (spike protein, SARS-CoV-2) RN - 03KSI6WLXH (naldemedine) RN - 5S6W795CQM (Naltrexone) RN - 8A1O1M485B (Imatinib Mesylate) RN - 9WS5RD66HZ (Simeprevir) SB - IM EIN - Phys Chem Chem Phys. 2021 May 28;:. PMID: 34046655 MH - Antiviral Agents/chemistry/*pharmacology MH - *Drug Design MH - Drug Evaluation, Preclinical MH - Humans MH - Imatinib Mesylate/chemistry/pharmacology MH - Molecular Docking Simulation MH - Naltrexone/analogs & derivatives/chemistry/pharmacology MH - Protein Domains/drug effects MH - SARS-CoV-2/chemistry/*drug effects MH - Simeprevir/chemistry/pharmacology MH - Spike Glycoprotein, Coronavirus/*antagonists & inhibitors/chemistry/metabolism EDAT- 2021/05/20 06:00 MHDA- 2021/06/16 06:00 CRDT- 2021/05/19 09:00 PHST- 2021/05/20 06:00 [pubmed] PHST- 2021/06/16 06:00 [medline] PHST- 2021/05/19 09:00 [entrez] AID - 10.1039/d1cp01045j [doi] PST - ppublish SO - Phys Chem Chem Phys. 2021 Jun 9;23(22):12549-12558. doi: 10.1039/d1cp01045j.