“…It has been implicated in an array of cellular processes: organellar biogenesis, endo-, exo-, phagocytosis and protein secretion [2]; apoptosis [1]; adhesion [4]; and, perhaps most notably, macroautophagy (henceforth: "autophagy"; [3]), as well as a special type of autophagy, namely zymophagy, in which zymogen granules—subcellular structures that contain inactive digestive enzyme—are selectively degraded [5]. Last but not least, it has been shown to play a key role in certain human diseases, namely pancreatitis [1,6], diabetes [7], and several types of cancer [4,8,9]. The phenotypes and processes in which VMP1 is involved are gradually being elucidated at the molecular level: its plasma-membrane localization and cell-adhesion capacity, for instance, account for its reduced expression in metastasized cancer cells [4], since loss of adhesion is essensial for metastasis [10]; and its role in zymophagy helps to protect pancreas cells from digesting themselves during pancreatitis [5].…”