. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "e2f1_human"^^ . "E2F1"^^ . "Retinoblastoma-binding protein 3"^^ . "PBR3"^^ . "Retinoblastoma-associated protein 1"^^ . "RBBP3"^^ . "pRB-binding protein E2F-1"^^ . . "Transcription factor E2F1"^^ .