HEK293T cells were transfected with the pCMV6-ENTRY control (Left lane) or pCMV6-ENTRY GTF2F1 (RC201294, Right lane) cDNA for 48 hrs and lysed. Equivalent amounts of cell lysates (5 ug per lane) were separated by SDS-PAGE and immunoblotted with anti-GTF2F1. Positive lysates LY400767 (100 ug) and LC400767 (20 ug) can be purchased separately from OriGene.