The protein encoded by this gene is a proline-rich salivary protein. 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. Alternatively spliced transcript variants encoding distinct isoforms have been described.[6]
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Saitoh E, Isemura S, Sanada K (1984). "Further fractionation of basic proline-rich peptides from human parotid saliva and complete amino acid sequence of basic proline-rich peptide P-H". J. Biochem. 94 (6): 1991–9. doi:10.1093/oxfordjournals.jbchem.a134553. PMID6671974.
Kauffman D, Wong R, Bennick A, Keller P (1983). "Basic proline-rich proteins from human parotid saliva: complete covalent structure of protein IB-9 and partial structure of protein IB-6, members of a polymorphic pair". Biochemistry. 21 (25): 6558–62. doi:10.1021/bi00268a036. PMID6924859.
Isemura S, Saitoh E, Sanada K (1982). "Fractionation and characterization of basic proline-rich peptides of human parotid saliva and the amino acid sequence of proline-rich peptide P-E". J. Biochem. 91 (6): 2067–75. doi:10.1093/oxfordjournals.jbchem.a133900. PMID7118863.
Kim HS, Lyons KM, Saitoh E, et al. (1993). "The structure and evolution of the human salivary proline-rich protein gene family". Mamm. Genome. 4 (1): 3–14. doi:10.1007/BF00364656. PMID8422499. S2CID24058984.
Harrington JJ, Sherf B, Rundlett S, et al. (2001). "Creation of genome-wide protein expression libraries using random activation of gene expression". Nat. Biotechnol. 19 (5): 440–5. doi:10.1038/88107. PMID11329013. S2CID25064683.