Lipase that, together with lipl-3, plays a role in the response to nutrient deprivation by controlling lipid metabolism (PubMed:23604316). Specifically, involved in the breakdown of lipids during lipophagy, a process during which lipids contained in lipid droplets that have been delivered to lysosomes by autophagy are degraded (PubMed:23604316). Optimum pH is acidic. Secreted into the intestinal lumen. Up-regulated in the intestine by fasting (PubMed:23604316). Down-regulated in response to a high-glucose diet (PubMed:29113111). Belongs to the AB hydrolase superfamily. Lipase family.