Abstract
We have identified a short, highly repetitive element within intron -1 of the human c-Ha-ras gene. This element was found to be transcribed in both orientations and to be homologous to heterogeneous nonpolyadenylated transcripts. The repetitive element blocked transcriptional readthrough from a strong upstream viral promoter but allowed unimpaired readthrough from the c-Has-ras promoter. We suggest that it may serve to prevent excessive transcription into the coding region of the gene under such circumstances as viral insertion.
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