doi: 10.1126/science.2999984.
Repression of the immunoglobulin heavy chain enhancer by the adenovirus-2 E1A products
- PMID: 2999984
- DOI: 10.1126/science.2999984
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Repression of the immunoglobulin heavy chain enhancer by the adenovirus-2 E1A products
Science.
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Abstract
The products of the adenovirus-2 (Ad2) immortalizing oncogene E1A repress the activity of the SV40, polyoma virus and E1A enhancers. Evidence is presented that Ad2 infection of MPC11 plasmocytoma cells results in an inhibition of transcription of both the gamma 2b heavy chain (IgH) and the kappa light chain immunoglobulin genes. This inhibition is caused by the Ad2 E1A products. Furthermore, the Ad2 E1A products repress transcription activated by the immunoglobulin heavy chain enhancer in chimeric recombinants, which are either stably integrated in the genome of lymphoid cells or are present as episomes. The implications of negative regulation of cellular enhancers are discussed.
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