Figure 1. Roles of Tam41 and Art5 in yeast hospholipid biosynthetic pathways. PM, plasma membrane; ER, endoplasmic reticulum; OM, mitochondrial outer embrane; IMS, mitochondrial intermembrane space; PS, phosphatidyl serine; PGP, phosphatidyl glycerol phosphate; PG, phosphatidyl glycerol.