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. 2012 Feb 21;7(2):e31201. doi: 10.1371/journal.pone.0031201

Figure 8. Luciferase assay.

Figure 8

Results demonstrated that the formation and stabilization of G-quadruplex induced by berberine could increase RLX promoter activity about 10∼40 folds and in a dose-dependent manner (blue column). Berberine has no effect on RLX promoter activity when the G-rich region mutated (red column). Results are presented three to four separate experiments.