7L8H image
Entry Detail
PDB ID:
7L8H
Title:
EV68 3C protease (3Cpro) in Complex with Rupintrivir
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2020-12-31
Release Date:
2021-09-22
Method Details:
Experimental Method:
Resolution:
1.95 Å
R-Value Free:
0.18
R-Value Work:
0.15
R-Value Observed:
0.18
Space Group:
H 3
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:3C Protease
Chain IDs:A, B
Chain Length:189
Number of Molecules:2
Biological Source:Human enterovirus D68
Ligand Molecules
Primary Citation
Pan-3C Protease Inhibitor Rupintrivir Binds SARS-CoV-2 Main Protease in a Unique Binding Mode.
Biochemistry 60 2925 2931 (2021)
PMID: 34506130 DOI: 10.1021/acs.biochem.1c00414

Abstact

Rupintrivir targets the 3C cysteine proteases of the picornaviridae family, which includes rhinoviruses and enteroviruses that cause a range of human diseases. Despite being a pan-3C protease inhibitor, rupintrivir activity is extremely weak against the homologous 3C-like protease of SARS-CoV-2. In this study, the crystal structures of rupintrivir were determined bound to enterovirus 68 (EV68) 3C protease and the 3C-like main protease (Mpro) from SARS-CoV-2. While the EV68 3C protease-rupintrivir structure was similar to previously determined complexes with other picornavirus 3C proteases, rupintrivir bound in a unique conformation to the active site of SARS-CoV-2 Mpro splitting the catalytic cysteine and histidine residues. This bifurcation of the catalytic dyad may provide a novel approach for inhibiting cysteine proteases.

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Primary Citation of related structures