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Fig. 2. Insulin induces the translocation of PKB[DD]-GLUT4 but not
PKB[KD]-GLUT4 to the plasma membrane of 3T3-L1 adipocytes. 3T3-L1
adipocytes were microinjected with plasmids encoding constitutively active PKB
fused to the N-terminus of GLUT4 (A; PKB[DD]-GLUT4) and
kinase-inactive PKB fused to the N-terminus of GLUT4 (B;
PKB[KD]-GLUT4). 16 hours later the cells were serum starved for 2
hours and then incubated, as required, in the presence or absence of insulin
(30 minutes at 100 nM), as indicated. The cells were fixed and stained with
anti-HA antibodies and imaged by confocal microscopy.
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