| Regulation of E2F 1 gene expression by p 130 ( Rb 2 ) and D type cyclin kinase activity . ^^^ We now demonstrate that the presence of an E2F DNA binding complex containing the Rb related p 130 protein ( Rb 2 ) correlates with E2F 1 gene repression and that overexpression of p 130 inhibits transcription from the E2F 1 promoter . ^^^ |