The medial-Golgi ion pump Pmr1 supplies the yeast secretory pathway with Ca2+ and Mn2+ required for glycosylation, sorting, and endoplasmic reticulum-associated protein degradation. - Dürr, ,G.,.; Strayle, ,J.,.; Plemper, ,R.,.; Elbs, ,S.,.; Klee, ,S..K.,.; Catty, ,P.,.; Wolf, ,D..H.,.; and Rudolph, ,H..K.. (Mol. Biol. Cell., 1998)