ArticleArchives of virology2025
Structural basis for broad-spectrum binding of AT-9010 to flaviviral methyltransferases.
Article in Archives of virology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Structural and computational analysis of monkeypox virus methyltransferase: dynamic inhibition mechanisms and their implications for antiviral design.Molecular diversity · 2026Article
- Zika virus and host protein interactions for understanding molecular mechanisms of pathogenesis and therapeutic development.Frontiers in cellular and infection microbiology · 2026Review
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2 authors.
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Abstract
AT-9010 (2'-methyl-2'-fluoro guanosine triphosphate) is a GTP analog whose prodrug, AT-752 is under consideration in human medicine as a potential antiviral drug against certain flaviviruses. It was previously believed to inhibit viral replication by acting primarily as a chain terminator. However, it was discovered recently that it also binds the GTP binding site of the methyltransferase (MTase) domain of the orthoflavivirus polymerase, thus interfering with RNA capping. Here, we investigated the binding of AT-9010 to Ntaya and Zika virus MTases. Structural analysis using X-ray crystallography revealed similar interactions between the base and sugar moieties of AT-9010 and key residues in both MTases, although differences in hydrogen bonding were observed. Our analysis also suggested that the triphosphate part of AT-9010 is flexible. Despite minor variations, the overall binding mode of AT-9010 was found to be the same for all of the flaviviral MTases examined, suggesting a structural basis for the efficacy of AT-9010 against multiple orthoflavivirus MTases.
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