|Description||1263W94 inhibited viral replication in a dose-dependent manner, with a mean 50% inhibitory concentration (IC50) of 0.12 ± 0.01 μM compared to a mean IC50 for GCV of 0.53 ± 0.04 μM, as measured by a multicycle DNA hybridization assay. Maribavir inhibits viral genome copy numbers and infectivity to levels similar to and exceeding levels produced by BGLF4 knockout virus. Introduction of 1.0 or 10 nM maribavir, a known pUL97 inhibitor, and subsequent Lineweaver-Burk analysis demonstrated competitive inhibition of CPV phosphorylation, with a Ki of 3.0+/-0.3 nM. Maribavir has significant activity against both human cytomegalovirus (CMV) and Epstein-Barr virus, but not other herpesviruses. Unlike ganciclovir, which needs to be phosphorylated by UL 97 kinase to become an active inhibitor of DNA polymerase, maribavir directly inhibits UL 97 kinase.|
|Synonyms||1263W94; BW1263W94; GW257406X|
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