Polypeptide reacting: MLDP = myocardial lipid droplet protein (also described as OXPAT/PAT-1 and perilipin 5 or PLIN5), MW 50,844 (calculated from aa sequence data), apparent Mr52,000 (after SDS-PAGE) MLDP/ PLIN5 pertains to the PLIN/PAT-family proteins, covering the surface of cytoplasmic lipid droplets and sharing a homologuous domain called PAT. Additional PLIN/PAT proteins include adipophilin (ADRP, PLIN2), perilipin (PLIN1), and TIP47 (PLIN3) which are expressed in differentiation-related stages of lipid metabolism. No cros s - reactivity with additional PLIN/PAT proteins (including adipophilin/ADRP/PLIN2, perilipin/PLIN1, and TIP47/PLIN3) which are expressed in differentiation - related stages of lipid metabolism.