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EMBO J. 1994 Oct 17;13(20):4816-22.

Cyclin G is a transcriptional target of the p53 tumor suppressor protein.

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1
Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, NY 11724.

Abstract

Through a PCR-based differential screening method, cyclin G was identified as a novel transcriptional target of the p53 tumor suppressor gene product. In both a mouse p53 temperature-sensitive leukemic cell line and mouse embryonic fibroblasts (MEF) after gamma-irradiation, cyclin G mRNA was rapidly induced. MEF from a p53-deficient mouse expressed cyclin G at a level > 10-fold lower than that from a wild-type mouse. Using a DNA binding assay, a specific p53 binding site was identified upstream from the cyclin G gene, which functioned as a p53-dependent cis-acting element in a transient transfection assay. These results suggest that cyclin G might participate in a p53-mediated pathway to prevent tumorigenesis.

PMID:
7957050
PMCID:
PMC395420
[Indexed for MEDLINE]
Free PMC Article
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