A Novel Protein, Mpm1, of the Mitochondria of the Yeast Saccharomyces cerevisiae

Abstract

A previously uncharacterized yeast protein, YJL066c, was disovered in the membrane fraction although it has no hydrophobic stretch. The protein was partly solubilized by Triton X-100 in an oligomeric form, while it was insoluble in alkali or salt. By immunofluorescent microscopy, it localization coincided with the mitochondria. We therefore propose it should be named Mpm1 (mitochondrial peculiar membrane protein 1).