STX17 and legionellosis: Given that the MAM and Stx17 are involved in a variety of cellular signalling and membrane trafficking pathways14, 15, 16, 19, 38, including the removal of oxidized or damaged mitochondrial content via mitochondria-derived vesicles39, it is tempting to speculate that cellular systems other than autophagy and apoptosis might be also subverted on Legionella infection.