PRB2 is a symbol for the gene, Proline-rich protein BstNI subfamily 2, in humans. Other names include: Basic salivary proline-rich protein 2; Con1 glycoprotein; IB-9; PRPPRB1; Ps; cP7. The encoded protein has an amino acid length of 416 and a mass of 40.8 kDa. This gene shares homology with other species, including: Mouse.