{Reference Type}: Journal Article {Title}: Sharing is caring: TMEM165 a Golgi calcium importer used by the lysosome. {Author}: Murchison AK;Abu-Remaileh M; {Journal}: Trends Biochem Sci {Volume}: 49 {Issue}: 8 {Year}: 2024 Aug 29 {Factor}: 14.264 {DOI}: 10.1016/j.tibs.2024.05.006 {Abstract}: Calcium is a crucial second messenger in the cell that is stored in organelles including lysosomes. Proteins that facilitate calcium entry to the lysosome were unknown. A recent report by Zajac et al. identified TMEM165 as a proton-activated calcium importer on the lysosome, thus discovering a key player in subcellular calcium homeostasis.