"C1384539" . . . "Transcription Factor E2F-1"@en . . . . "E2F1 Transcription Factor"@en . "Transcription Factor E2F1"@en . "D050687" . "E2F1 Transcription Factor"@en . "E2F Transcription Factor 1 Protein"@en . . "Retinoblastoma Binding Protein 3"@en . "E2F-1 Transcription Factor"@en . "Retinoblastoma-Associated Protein 1"@en .