En. Nabirochkina et al., Millimolar concentrations of methylmethanesulfonate enhance transcription from the cytomegalovirus early promoter at least 100-fold, MOL BIOL, 34(5), 2000, pp. 652-654
Treatment of cultured cells with methylmethanesulfonate enhanced transcript
ion from the CMV early promoter 25-250 times and protein synthesis 60-100 t
imes in a dose-dependent way. The effect was promoter-specific and was not
observed with a retroviral LTR promoter. Structural analogs such as ethylme
thanesulfonate, trifluoromethanesulfonate, and p-toluenesulfonate did not e
nhance expression from the CMV promoter.