BPLP is an alias for the gene, Proline rich, lacrimal 1, in humans. Other names include: Proline-rich protein 1; Basic proline-rich lacrimal protein; PRL1; opiorphin. The encoded protein has an amino acid length of 248 and a mass of 27.2 kDa. Other isoforms may exist. BPLP is a member of the PROL1/PROL3 family. This gene shares homology with other species, including: Mouse, Rat.