 pyrilipin-3, PLIN-3, a protein involved in the formation of lipid droplets, LDS, is recruited to nascent LDS through its interaction with phosphatidic acid and diacilliceral, DAG. The PAT domain of PLIN-3, which contains 11 meropets, is responsible for this interaction. Additionally, PLIN-3's PAT domain and 11 meropets are required for PLIN-3 to be recruited to DAG-enriched membranes in cells. This article was authored by Yong Emi Choi, Delilah Ajaji, Kailin D. Fleming and others.