Fig. 5. GFP-Mdv1p and -Caf4p partially localise to peroxisomes in a Fis1p-dependent manner. (A,D) caf4
/mdv1
/vps1
cells coexpressing GFP-Mdv1p (A) or GFP-Caf4p (D) and HcRed-PTS1 (per-Red). Top row: flattened z-stack showing faint colocalisation of GFP fusion with peroxisome (arrowheads). Bottom row: colocalisation is easier to detect in individual slices of the z-stack. (B,E) Mating experiment showing enhanced levels of Mdv1p and Caf4p on peroxisomes as a result of Fis1p-Pex15p expression. fis1
/vps1
cells expressing both Pex15p-Fis1p and either GFP-Mdv1p (B) or GFP-Caf4p (E) were mated with pex3
cells expressing HcRed-PTS1. Top row: flattened z-stack showing colocalisation with peroxisomes. Bottom row: colocalisation is easier to detect in individual slices of the z-stack. Peroxisome labelling with GFP is much stronger compared to A and D. (C,F) Both GFP fusions were mainly cytosolic when expressed in fis1
cells. Scale bar: 5 µm.