The sequences found in this family are similar to PGAP1. This is an endoplasmic reticulum membrane protein with a catalytic serine containing motif that is conserved in a number of lipases. PGAP1 functions as a GPI inositol-deacylase; this deacylation is important for the efficient transport of GPI-anchored proteins from the endoplasmic reticulum to the Golgi body. This entry also includes Tgl2, a mitochondria protein that serves as a triacylglycerol lipase in budding yeasts.