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. 2001 Feb 6;98(4):1422–1426. doi: 10.1073/pnas.041616998

Figure 3.

Figure 3

Repression of VP16 activation by the A boxes of various KRAB(AB), KRAB(Ab) and KRAB(A) domains. 17M2-ERE-G-CAT (1 μg) and pCH110 (1 μg) were cotransfected into COS-1 cells with ER(C)-VP16 (100 ng) together with 250 ng of each GAL4-KRAB(A) fusion protein as indicated. CAT activities are expressed relative to the CAT activity measured in the presence of the unfused GAL4 expression vector (taken as 100%). Values (±10%) represent the averages of three independent duplicated transfections after normalization to β-galactosidase activities.