doi: 10.1126/science.3865371.
Identification of a transcriptional enhancer element upstream from the proto-oncogene fos
- PMID: 3865371
- DOI: 10.1126/science.3865371
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Identification of a transcriptional enhancer element upstream from the proto-oncogene fos
Science.
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Abstract
Sequences upstream from the proto-oncogene fos were shown to be essential for its transcription. Transient expression of the chloramphenicol acetyl-transferase (CAT) gene linked to upstream sequences of the fos gene including its promoter reveals that sequences located 64 to 404 base pairs 5' to the fos cap site contain a typical transcriptional enhancer. Moreover, these enhancer sequences, which are strikingly conserved between mouse and human fos genes, coincide with a deoxyribonuclease I-hypersensitive site in the chromatin. The expression of the fos-CAT fusion genes was stimulated only two to three times by the fos inducer 12-0-tetradecanoyl phorbol-13-acetate. The fos enhancer does not appear to be tissue-specific.
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