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A new component of the transcription factor DRTF1/E2F

A Correction to this article was published on 30 September 1993

Abstract

TRANSCRIPTION factor DRTF1/E2F coordinates events in the cell cycle with transcription by its cyclical interactions with important regulators of cellular proliferation like the retinoblastoma tumour-suppressor gene product (Rb) and the Rb-related protein, p107 (refs 1–8). DRTF1/E2F binding sites occur in the control regions of genes involved in proliferation9,10, and both Rb and p107 repress the capacity of DRTF1/E2F to activate transcription (refs 11, 12; M. Zamanian and N.B.L.T., manuscript submitted). Mutant Rb proteins isolated from tumour cells are unable to bind DRTF1/E2F (refs 11–13), and certain viral oncoproteins, such as adenovirus El A, sequester Rb and p107 in order to free active DRTF1/E2F (refs 5, 11, 12, 14, 15). Here we report the isolation of a complementary DNA encoding DRTF 1-polypeptide-1 (DP-1), a major sequence-specific binding protein that is present in DRTF1/E2F, including Rb- and p107-associated DRTF1/E2F. The DNA-binding domain of DP-1 contains a region that resembles that of E2F-1 (refs 16, 17), and recognizes the same sequence. DRTF1/E2F thus appears to contain at least two sequence-specific DNA-binding proteins.

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Girling, R., Partridge, J., Bandara, L. et al. A new component of the transcription factor DRTF1/E2F. Nature 362, 83–87 (1993). https://doi.org/10.1038/362083a0

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