ICAP1 contains a functional NLS.
A, CHO cells overexpressing GFP-tagged ICAP1
constructs were plated on fibronectin, fixed 24 h later, and
stained with DAPI to identify nuclei. Representative images are
shown; bar, 10 μm. B,
relative amount of GFP intensity in the nucleus compared with
the integrated GFP intensity of the entire cell.
Boxes, 25th through 50th and 50th through
75th percentile; whiskers, 5th through 95th
percentile (n = 88–139 cells from 5
independent experiments). *, p ≤ 0.005
as determined by a one-way ANOVA with Tukey's correction for
multiple tests. C, representative fractionation
of CHO cells overexpressing GFP-tagged ICAP1 constructs.
C, 28% of the cytoplasmic fraction;
N, 80.0% of the nuclear fraction. Carbonyl
reductase (CBR1) and histone deacetylase
(HDAC1) represent quality controls for
cytoplasmic and nuclear fractions, respectively.
D, quantification of cell fractionation
data where the percentage nuclear = total nuclear/(total nuclear
N + total cytoplasmic) × 100
(bar, mean percentage nuclear value;
n = 9). *, p ≤ 0.02
as determined by a one-way ANOVA with Tukey's correction for
multiple tests.