Zoller B, Nicolas D, Molina N, Naef F.

Mol Syst Biol. 2015 Jul 27;11(7):823. doi:10.15252/msb.20156257

Structure of silent transcription intervals and noise characteristics of mammalian genes.

One type of promoter alternating directly between on and off phases, and another type with multiple successive off sub-phases, causing the distribution of durations of inactive phases to become peaked instead of exponential.