Electrophoretic
mobility shift assay of FOXC2 and DNA. (A) FOXC2
and DNA binding by EMSA. The purified FOXC2 DBD was mixed with the
DNA containing TAAACA motif, and the protein–DNA complexes
were separated on a 6% acrylamide gel. Increasing concentrations of
FOXC2 DBD, 0, 2.5, 5, 10, 25, 50, 75, 150, and 300 μM, were
used (lanes 1–9). (B) Linear scale saturation binding curve
of FOXC2 DBD measured by EMSA. The Kd and R2 were estimated as 26.4 ± 3.9 μM
(95% CI: 18.7–37 μM) and 0.94, respectively. The error
bar indicates a standard deviation of measurements from triplicate
experiments.