Article
The Number of a U3 Repeat Box Acting as an Enhancer in Long Terminal Repeats of Polytropic Replication-Competent Porcine Endogenous Retroviruses Dynamically Fluctuates during Serial Virus Passages in Human Cells
1 Aug 2001
Abstract excerpt
The organization and transcriptional regulation of porcine endogenous retrovirus (PERV) long terminal repeats (LTRs) are unknown. We have studied the activity of LTRs from replication-competent molecular clones by performing luciferase reporter assays. The LTRs differ in the presence and number of 39-bp repeats located in U3 that confer strong promoter activity in human, simian, canine, feline, and porcine cell...
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