Localisation of PfRab5B-GFP fusion proteins in P. falciparum. Parasites were transfected with constructs expressing the N-terminal 28 amino acids of PfRab5B or 29 amino acids of PfGAP45 fused to GFP under a schizont stage-specific promoter (msp3 59UTR region). Localisation of PfRab5B28-GFP (A) and GAP4529-GFP fusions (B) as well as myristoylation (G2A) and palmitoylation-deficient fusions (C3A in PfRab5B28-GFP and C5A in GAP4529-GFP) were investigated. The first image in a series corresponds to GFP fluorescence, the second a merge of GFP fluorescence with nuclear DAPI stain, and the third a merge of GFP fluorescence, DAPI and bright field images. Size bars are 2 mm. GFP was observed at the plasma membrane (top right hand panel). In transgenic parasites that expressed GFP fused to G2A variants of both PfRab5B and GAP45 the association of GFP with the plasma membrane was lost and we observed a diffuse GFP-staining throughout the cytoplasm of the parasites .

Ezougou CN, Ben-Rached F, Moss DK, Lin JW, Black S, Knuepfer E, Green JL, Khan SM, Mukhopadhyay A, Janse CJ, Coppens I, Yera H, Holder AA, Langsley G. Plasmodium falciparum Rab5B Is an N-Terminally Myristoylated Rab GTPase That Is Targeted to the Parasite's Plasma and Food Vacuole Membranes. PLoS One. 2014 9(2):e87695.