Basic salivary proline-rich protein 3 is a protein that in humans is encoded by the PRB3gene.[3][4]
The protein encoded by this gene is a proline-rich salivary protein. It is a major constituent of parotid saliva. This protein is proposed to act as a bacterial receptor. This gene and five other genes that also encode salivary proline-rich proteins (PRPs), as well as a gene encoding a lacrimal gland PRP, form a PRP gene cluster in the chromosomal 12p13 region.[4]
Azen EA, Maeda N (1988). "Molecular genetics of human salivary proteins and their polymorphisms". Adv. Hum. Genet. 17: 141–99. doi:10.1007/978-1-4613-0987-1_5. ISBN978-1-4612-8279-2. PMID3055850.