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Evaluation Study
Journal Article
Purification of foamy viral particles.
Virology 2017 June
Foamy viruses are non-pathogenic retroviruses and represent a tool for vector development. For gene therapy applications and for analyses of viral protein composition infectious particles need to be purified, which has been difficult for foamy viruses in the past. Here, we describe a novel, simple, and fast purification method for prototype foamy viruses with high purity using size exclusion and affinity chromatography. More than 99,9% of the contaminating proteins were removed. The purified viruses were used to determine the amount of the incorporated Pol protein relative to Gag. The determined Gag to Pol PR-RT ratio of 30:1 confirmed previous studies suggesting FV virions encapsidate fewer number of Pol molecules than orthoretroviruses.
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