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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

pRB and p107/p130 are required for the regulated expression of different sets of E2F responsive genes.

The activity of the E2F transcription factor is controlled by physical association with the retinoblastoma protein (pRB) and two related proteins, p107 and p130. The pRB family members are thought to control different aspects of E2F activity, but it has been unclear what the respective functions of these proteins might be. To dissect the specific functions of pRB, p107, and p130 we have investigated how the expression of E2F-regulated genes is changed in cultures of primary cells lacking each of these family members. Whereas no changes were found in the expression of E2F- target genes in cells lacking either p107 or p130, deregulated expression of E2F targets was seen in cells lacking pRB and in cells lacking both p107 and p130. Surprisingly, the genes that were disregulated in these two settings were completely different. These findings show that pRB and p107/p130 indeed provide different functions in E2F regulation and identify target genes that are dependent on pRB family proteins for their normal expression.[1]


  1. pRB and p107/p130 are required for the regulated expression of different sets of E2F responsive genes. Hurford, R.K., Cobrinik, D., Lee, M.H., Dyson, N. Genes Dev. (1997) [Pubmed]
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