Alternative translation and alternative RNA processing mechanism in parvovirus RNA processing
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[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Viruses as obligate intracellular metabolic parasite require the capacity to orchestrate and modulate the host environment either in the nucleus or cytoplasm for their efficient reproductive life cycle. This warrants the use of diverse range of proteins expressed from the viral genome with the ability of regulating viral genome replication, transcription and translation, in addition antagonizing host factors inhibitory to the virus. Therefore, in order to achieve these goals, viruses utilizes gene expression strategies to expand their coding capacity. Gene expression mechanism such as transcription initiation, capping, splicing and 3�-end processing afford viruses the opportunities to utilize the eukaryotic metabolic machineries for generating proteome diversity. Parvoviruses and other DNA viruses effectively capitalize on their use of nuclear eukaryotic metabolic machineries to co-opt host cell factors for optimal replication and gene expression. Parvoviruses with small genome size and overlapping open reading frames utilize alternative transcription initiation, alternative splicing and alternative polyadenylation to co-ordinate the expression of its non-structural and structural proteins. In this work, we have characterized how two parvoviruses; Dependovirus AAV5 and Bocavirus Minute virus of canine (MVC) utilize alternative gene expression mechanisms and strategies to optimize expression of viral proteins from their genome.
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