Figure 2.
Transient overexpression of EGFP-Rab5a wild-type and double-cysteine mutant proteins in HeLa cells. HeLa cells were transfected with EGFP-Rab5a (A–C), EGFP-Rab5aCGC (D–F), EGFP-Rab5aCCQNI (G–I), or with the respective constitutively active constructs, EGFP-Rab5aQ79L (J–L), EGFP-Rab5aQ79L, CGC (M–O) and EGFP-Rab5aQ79L, CCQNI (P–R). After 24 h, cells were permeabilized, fixed, and immunostained with an anti-TfR antibody (A–I) or with anti-EEA1 antibody (Panels J-R) as described under MATERIALS AND METHODS. The panels on the right show the merged fluorescent signals. Bar, 20 μm.