Figure 3. Fluorescence properties of ER-targeted roGFP-iL mutants in the ER.
(A) Fluorescence images of HeLa cells transfected with ER-targeted roGFP-iL and its mutants were acquired (green) after fixation with 4% PFA. The cells were also co-stained with anti-GFP (red) and anti-Hsp47 (blue, ER marker). (B) Immunoblotting of ER-targeted roGFP-iL and its mutants with anti-GFP in 1% NP-40-soluble (S) and -insoluble (P) cell fractions.