J. Biochem, 1982, Vol. 91, No. 6 2067-2075
© 1982 Japanese Biochemical Society
research-article |
Fractionation and Characterization of Basic Proline-Rich Peptides of Human Parotid Saliva and the Amino Acid Sequence of Proline-Rich Peptide P-E
Department of Oral Biochemistry, Nippon Dental University Niigata Faculty Niigata, Niigata 951
Basic proline-rich peptides of human parotid saliva were fractionated and characterized. The amino acid sequence of one of the purified peptides, P-E, was determined to be SPPGKPQGP
PQGGNQPQG
PPPPGKPQG
PPQGGNRPQ
PPPPGKPQG
PPQGDKSRS
R.
The results demonstrate the repetitiveness of the partial sequence within the molecule and the occurrence of structures common to those of other salivary poly-peptides such as P-C and Protein C.
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