ArticlePLoS pathogens2023
A single inactivating amino acid change in the SARS-CoV-2 NSP3 Mac1 domain attenuates viral replication in vivo.
Article in PLoS pathogens, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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Who cites it
34 citing papers in PubMed, 34 citations in OpenAlex.
- Development of GS-441524 derivatives as potent SARS-CoV-2 Mac1 inhibitors via a direct-to-biology approach.European journal of medicinal chemistry · 2026Article
- Review
- Cellular engagement of the SARS-CoV-2 macrodomain by GS-441524 and enhancedRSC chemical biology · 2026Article
- Repurposing drug screen for the identification of helicase inhibitors from viruses of pandemic concern.SLAS discovery : advancing life sciences R & D · 2026Article
- Design, structure-based optimization and antiviral evaluation of potent inhibitors for the macrodomain Mac1 of SARS-CoV-2.Nature communications · 2026Article
- Development of GS-441524 Derivatives as Potent SARS-CoV-2 Mac1 Inhibitors via a Direct-to-Biology Approach.bioRxiv : the preprint server for biology · 2026Article
- Interactomics of SARS-CoV-2 Macrodomain 1 Reveals Putative Clients of ADP-Ribosyl Hydrolase Activity.Viruses · 2026Article
- CACHE Challenge #3: Targeting the Nsp3 Macrodomain of SARS-CoV-2.Journal of chemical information and modeling · 2026Article
- Discovery of AVI-6451, a Potent and Selective Inhibitor of the SARS-CoV-2 ADP-Ribosylhydrolase Mac1 with Oral Efficacy In Vivo.Journal of medicinal chemistry · 2026Article
- Crystallographic Ensembles Reveal the Structural Basis of Binding Entropy in SARS-CoV2 Macrodomain.bioRxiv : the preprint server for biology · 2025Article
- Structure-Based Rational Design of a Selective Hydrolase Inhibitor of the Severe Acute Respiratory Syndrome Coronavirus-2 Nsp3 Macrodomain.Chembiochem : a European journal of chemical biology · 2025Article
- Article
- Interactomics of SARS-CoV-2 Macrodomain 1 Reveals Putative Clients of ADP-ribosyl Hydrolase Activity.bioRxiv : the preprint server for biology · 2025Article
- Discovery of AVI-6451, a Potent and Selective Inhibitor of the SARS-CoV-2 ADP-Ribosylhydrolase Mac1 with Oral Efficacy in vivo.bioRxiv : the preprint server for biology · 2025Article
- Macrodomain ADP-ribose binding but not ADP-ribosylhydrolase activity is critical for chikungunya virus infection ofbioRxiv : the preprint server for biology · 2025Article
- The Mac1 ADP-ribosylhydrolase is a Therapeutic Target for SARS-CoV-2.bioRxiv : the preprint server for biology · 2025Article
- SARS-CoV-2 Nsp15 endoribonuclease subverts host defenses to enhance viral fitness in lung cells.Journal of virology · 2025Article
- Article
- Structure-based discovery of highly bioavailable, covalent, broad-spectrum coronavirus MScience advances · 2025Article
- Recombinant infectious bronchitis virus containing mutations in non-structural proteins 10, 14, 15, and 16 and within the macrodomain provides complete protection against homologous challenge.Journal of virology · 2025Article
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Authors and funding
17 authors at 4 institutions in 1 country.
Funding
Abstract
Despite unprecedented efforts, our therapeutic arsenal against SARS-CoV-2 remains limited. The conserved macrodomain 1 (Mac1) in NSP3 is an enzyme exhibiting ADP-ribosylhydrolase activity and a possible drug target. To determine the role of Mac1 catalytic activity in viral replication, we generated recombinant viruses and replicons encoding a catalytically inactive NSP3 Mac1 domain by mutating a critical asparagine in the active site. While substitution to alanine (N40A) reduced catalytic activity by ~10-fold, mutations to aspartic acid (N40D) reduced activity by ~100-fold relative to wild-type. Importantly, the N40A mutation rendered Mac1 unstable in vitro and lowered expression levels in bacterial and mammalian cells. When incorporated into SARS-CoV-2 molecular clones, the N40D mutant only modestly affected viral fitness in immortalized cell lines, but reduced viral replication in human airway organoids by 10-fold. In mice, the N40D mutant replicated at >1000-fold lower levels compared to the wild-type virus while inducing a robust interferon response; all animals infected with the mutant virus survived infection. Our data validate the critical role of SARS-CoV-2 NSP3 Mac1 catalytic activity in viral replication and as a promising therapeutic target to develop antivirals.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.