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. 1987 Apr;61(4):1261-5.
doi: 10.1128/JVI.61.4.1261-1265.1987.

The 3' long terminal repeat of a transcribed yet defective endogenous retroviral sequence is a competent promoter of transcription

D E Levy, R D McKinnon, M N Brolaski, J W Gautsch, M C Wilson

The 3' long terminal repeat of a transcribed yet defective endogenous retroviral sequence is a competent promoter of transcription

D E Levy et al. J Virol. 1987 Apr.

Abstract

Although actively transcribed and present as multiple genomic copies, a distinct class of endogenous murine leukemia virus-related sequence does not give rise to infectious virus. Since the long terminal repeat at the 3' terminus provides the transcriptional start site after reintegration, we determined the structure and potential promoter activity of that sequence obtained from cDNA of endogenous retroviral transcripts. These studies demonstrate that the distinctive 3' long terminal repeat sequence of these transcripts could serve as an effective promoter of transcription and, therefore, may not be the primary defect in the infectious cycle of retroviral replication but may result in the propagation of these endogenous retroviral sequences in the genome as retrotransposons.

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