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Understanding helicases as a means of virus control.

Identifieur interne : 003C43 ( Main/Exploration ); précédent : 003C42; suivant : 003C44

Understanding helicases as a means of virus control.

Auteurs : D N Frick [États-Unis] ; A M I. Lam

Source :

RBID : pubmed:16611118

Descripteurs français

English descriptors

Abstract

Helicases are promising antiviral drug targets because their enzymatic activities are essential for viral genome replication, transcription, and translation. Numerous potent inhibitors of helicases encoded by herpes simplex virus, severe acute respiratory syndrome coronavirus, hepatitis C virus, Japanese encephalitis virus, West Nile virus, and human papillomavirus have been recently reported in the scientific literature. Some inhibitors have also been shown to decrease viral replication in cell culture and animal models. This review discusses recent progress in understanding the structure and function of viral helicases to help clarify how these potential antiviral compounds function and to facilitate the design of better inhibitors. The above helicases and all related viral proteins are classified here based on their evolutionary and functional similarities, and the key mechanistic features of each group are noted. All helicases share a common motor function fueled by ATP hydrolysis, but differ in exactly how the motor moves the protein and its cargo on a nucleic acid chain. The helicase inhibitors discussed here influence rates of helicase-catalyzed DNA (or RNA) unwinding by preventing ATP hydrolysis, nucleic acid binding, nucleic acid release, or by disrupting the interaction of a helicase with a required cofactor.

DOI: 10.2174/138161206776361147
PubMed: 16611118


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">Helicases are promising antiviral drug targets because their enzymatic activities are essential for viral genome replication, transcription, and translation. Numerous potent inhibitors of helicases encoded by herpes simplex virus, severe acute respiratory syndrome coronavirus, hepatitis C virus, Japanese encephalitis virus, West Nile virus, and human papillomavirus have been recently reported in the scientific literature. Some inhibitors have also been shown to decrease viral replication in cell culture and animal models. This review discusses recent progress in understanding the structure and function of viral helicases to help clarify how these potential antiviral compounds function and to facilitate the design of better inhibitors. The above helicases and all related viral proteins are classified here based on their evolutionary and functional similarities, and the key mechanistic features of each group are noted. All helicases share a common motor function fueled by ATP hydrolysis, but differ in exactly how the motor moves the protein and its cargo on a nucleic acid chain. The helicase inhibitors discussed here influence rates of helicase-catalyzed DNA (or RNA) unwinding by preventing ATP hydrolysis, nucleic acid binding, nucleic acid release, or by disrupting the interaction of a helicase with a required cofactor.</div>
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