| Literature DB >> 2915921 |
T Kawamoto1, K Makino, S Orita, A Nakata, T Kakunaga.
Abstract
Transcription of the beta-actin gene is rapidly inducible in response to serum stimulation. To determine the regions responsible for serum inducible and basal level expression, the human beta-actin promoter was subjected to mutational analysis. Two distinct elements, the CCAAT homology and the beta-actin specific conserved sequences, were found by a chloramphenicol acetyltransferase expression assay and sequence comparisons, and then analyzed for possible functions. Using a DNA bend assay, it was shown that the conserved sequences included the core of a sequence-directed bend of DNA. Gel mobility shift and DNase I protection assays revealed that the conserved sequences and the CCAAT homology were recognized by binding factors in HeLa cell extracts.Entities:
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Year: 1989 PMID: 2915921 PMCID: PMC331601 DOI: 10.1093/nar/17.2.523
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971