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. 2001 Mar;3(3):289-95.
doi: 10.1038/35060086.

DNA Replication Control Through Interaction of E2F-RB and the Origin Recognition Complex

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DNA Replication Control Through Interaction of E2F-RB and the Origin Recognition Complex

G Bosco et al. Nat Cell Biol. .

Abstract

The E2F transcription factor and retinoblastoma protein control cell-cycle progression and DNA replication during S phase. Mutations in the Drosophila dE2F1 and dDP genes affect the origin recognition complex (DmORC) and initiation of replication at the chorion gene replication origin. Here we show that mutants of Rbf (an retinoblastoma protein homologue) fail to limit DNA replication. We also show that the dDP, dE2F1 and Rbf proteins are located in a complex with DmORC, and that dE2F1 and DmORC are bound to the chorion origin of replication in vivo. Our results indicate that dE2F1 and Rbf function together at replication origins to limit DNA replication through interactions with DmORC.

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