title: The amino acid sequence of a salivary proline-rich peptide, P-C, and its relation to a salivary proline-rich phosphoprotein, protein C.
abstract: A basic proline-rich peptide, P-C, was isolated from human whole saliva and its amino acid sequence was determined to be Gly-Arg-Pro-Gln-Gly-Pro-Pro-Gln-Gln-Gly-Gly-His-Gln-Gln-Gly-Pro-Pro-Pro-Pro-Pro-Pro-Gly-Lys-Pro-Gln-Gly-Pro-Pro-Pro-Gln-Gly-Gly-Arg-Pro-Gln-Gly-Pro-Pro-Gln-Gly-Gln-Ser-Pro-Gln. P-C was also found to be present in stimulated parotid saliva. The sequence determined appears to correspond to the C-terminal 44 residues of a proline-rich phosphoprotein, Protein C, the partial sequence of which has been elucidated, and suggests that P-C might be derived from Protein C.
mesh_terms: D000328:Adult; D000595:Amino Acid Sequence; D002135:Calcium-Binding Proteins; D006801:Humans; D010306:Parotid Gland / Q000378:metabolism; D010455:Peptides; D010750:Phosphoproteins; D011392:Proline; D055232:Proline-Rich Protein Domains; D012463:Saliva / Q000032:analysis*; D012471:Salivary Proteins and Peptides
chemical_list: D002135:Calcium-Binding Proteins; D010455:Peptides; D010750:Phosphoproteins; D012471:Salivary Proteins and Peptides; D011392:Proline