HeLa cells were co-transfected with Mito-MTX-GFP and OTC-Myc or OTC-Δ-Myc, treated with DMSO or MG132 and immunostained with anti-Myc and anti-p62 antibodies. Note that the p62-labled MAPAs were colocalized with OTC-∆ (red arrowheads), but not with OTC (white arrowheads) in the MG132 treated cells. Scale bar=10 µm. 