Abstract
In contrast to orthoretroviruses, processing of foamy viral p71 Gag is limited to a single cleavage site. Nevertheless, Gag maturation is essential for infectivity, but deletion of p3 results in a modest drop in infectivity. Here, we show that Gag processing of p71 to p68 and p3 is essential for full-length cDNA synthesis, while inactivation of Gag cleavage results in cDNAs containing only the RU5 region; cDNAs encompassing the U3 region were almost undetectable.
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