6VH0

1.95 A resolution structure of MERS 3CL protease in complex with inhibitor 6g

Summary for 6VH0

• Entry DOI: 10.2210/pdb6vh0/pdb
• Descriptor: Orf1a protein, N~2~-{[(5-ethyl-1,3-dioxan-5-yl)oxy]carbonyl}-N-{(2S)-1-hydroxy-3-[(3S)-2-oxopyrrolidin-3-yl]propan-2-yl}-L-leucinamide (3 entities in total)
• Functional Keywords: protease, mers 3cl protease inhhibitors, hydrolase, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor
• Biological source: Middle East respiratory syndrome-related coronavirus
• Total number of polymer chains: 2
• Total formula weight: 69487.50

Authors

Lovell, S.,Battaile, K.P.,Kashipathy, M.M.,Rathnayake, A.D.,Zheng, J.,Kim, Y.,Nguyen, H.N.,Chang, K.O.,Groutas, W.C. (deposition date: 2020-01-09, release date: 2020-08-12, Last modification date: 2024-11-13)

Primary citation

Rathnayake, A.D.,Zheng, J.,Kim, Y.,Perera, K.D.,Mackin, S.,Meyerholz, D.K.,Kashipathy, M.M.,Battaile, K.P.,Lovell, S.,Perlman, S.,Groutas, W.C.,Chang, K.O.
3C-like protease inhibitors block coronavirus replication in vitro and improve survival in MERS-CoV-infected mice.
Sci Transl Med, 12:-, 2020

PubMed Abstract: Pathogenic coronaviruses are a major threat to global public health, as exemplified by severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome coronavirus (MERS-CoV), and the newly emerged SARS-CoV-2, the causative agent of coronavirus disease 2019 (COVID-19). We describe herein the structure-guided optimization of a series of inhibitors of the coronavirus 3C-like protease (3CLpro), an enzyme essential for viral replication. The optimized compounds were effective against several human coronaviruses including MERS-CoV, SARS-CoV, and SARS-CoV-2 in an enzyme assay and in cell-based assays using Huh-7 and Vero E6 cell lines. Two selected compounds showed antiviral effects against SARS-CoV-2 in cultured primary human airway epithelial cells. In a mouse model of MERS-CoV infection, administration of a lead compound 1 day after virus infection increased survival from 0 to 100% and reduced lung viral titers and lung histopathology. These results suggest that this series of compounds has the potential to be developed further as antiviral drugs against human coronaviruses.

PubMed: 32747425
DOI: 10.1126/scitranslmed.abc5332

Experimental method

X-RAY DIFFRACTION (1.95 Å)