IndraLab

Statements


RB1 phosphorylated on S608 is inactive. 1 / 1
1 |

"In the present assay, ΔP3,4HA repressed E2F-mediated transcription similarly to wild-type pRB, suggesting that phosphorylation at other sites on ΔP3,4HA can disrupt its interaction with E2F and that these two sites are not sufficient to regulate E2F binding on DNA. This result is consistent with another report which showed that mutation of the human sites 8 and 9 (human Ser608 and Ser612) repressed E2F-mediated transcription to the same level as wild-type pRB (2). | Surprisingly, no one CDK site regulated the interaction of pRB with E2F when E2F was bound to DNA. Instead, disruption of transcriptional repression resulted from accumulation of phosphate groups on the RB molecule."