although sequences protected by histones in the repressed state became more accessible to micrococcal nuclease and ( methidiumpropyl-edta ) iron ( ii ) cleavage following induction of transcription , dna-protein particles containing these sequences retained the electrophoretic mobility of nucleosomes , indicating that the promoter region can be associated with nucleosomes under conditions of transcription activation .
C0040649
transcription
C0162493
transcription activation