Figure 4. The potential MEF2 binding sites in the proximal promoter region of PIK3CA and PIK3CG predicted by LASAGNA-Search 2.0. (A) Sequence characteristics and the location of the potential binding sites of MEF2 in the proximal promoter region of PIK3CG; (B) Sequence characteristics and the location of the potential binding sites of MEF2 in the proximal promoter region of PIK3CA.