Fig. 4.

Redirecting Fis1p to peroxisomes by expression of a Fis1-Pex15p fusion protein rescues the peroxisomal fission defect in vps1Δ /fis1Δ cells. Expression of Fis1p rescues the mitochondrial phenotype to that of wt cells, but restores the peroxisome phenotype to that of vps1Δ cells. Expression of Fis1-Pex15p does not rescue the mitochondrial phenotype, but restores the peroxisome phenotype to that of wt cells. Images are flattened z-stacks. Bar represents 5 μm.