A, Basal aromatase (arom) protein ubiquitination, sumoylation and methylation pattern and light chain (IgG-Lc) in MCF-7 cells. B, Ubiquitinated V5-aromatase (Ub-V5), light chain (IgG-Lc), total V5-aromatase (V5-arom) and Gapdh endogenous control (gapdh) in stably transfected MCF-7 cells. C, Sumoylated V5-aromatase (Sumo-V5), light chain (IgG-Lc), total V5-aromatase (V5-arom) and Gapdh in stably transfected MCF-7 cells. D, Pan-methylated V5-aromatase (Kme-V5), light chain (IgG-Lc), total V5-aromatase (V5-arom) and Gapdh in stably transfected MCF-7 cells.