Effects of dominant negative mutants of Vav2
on the stress fiber formation in MDCK-SHP-2-C/S cells and wild-type
MDCK cells. MDCK-SHP-2-C/S cells were transfected with
pCIneo-myc-Vav2-ΔDH+PH (ΔDH+PH) (Aa and Ab),
pCIneo-myc-Vav2-L212Q (L212Q) (Ac and Ad),
pCIneo-myc-Vav2-ΔDH+PH/R688K (ΔDH+PH/R688K) (Ba and
Bb), pCIneo-myc-Vav2-L212Q/R688K (L212Q/R688K) (Bc and
Bd), or pCIneo-myc-Vav2-wild-type (WT) (Ca and Cb). Wild-type MDCK
cells were also transfected with
pCIneo-myc-Vav2-ΔDH+PH (ΔDH+PH) (Cc and Cd). At
48 h after transfection, the cells were fixed, double stained with
rhodamine-conjugated phalloidin (Actin) or the anti-Myc mAb (Myc),
and analyzed by confocal microscopy. Confocal images are shown at the
basal level. The results shown are representative of three independent
experiments. Bar, 10 μm.