Yifat Cohen, Márton Megyeri, Oscar C W Chen, Giuseppe Condomitti, Isabelle Riezman, Ursula Loizides-Mangold, Alaa Abdul-Sada, Nitzan Rimon, Howard Riezman, Frances M Platt, Anthony H Futerman, Maya Schuldiner
The endoplasmic reticulum (ER) is a large, multifunctional and essential organelle. Despite intense research, the function of more than a third of ER proteins remains unknown even in the well-studied model organism Saccharomyces cerevisiae. One such protein is Spf1, which is a highly conserved, ER localized, putative P-type ATPase. Deletion of SPF1 causes a wide variety of phenotypes including severe ER stress suggesting that this protein is essential for the normal function of the ER. The closest homologue of Spf1 is the vacuolar P-type ATPase Ypk9 that influences Mn(2+) homeostasis...
2013: PloS One