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Methods are presented for the isolation of basic proteins (Pb proteins) from human parotid saliva collected from humans possessing different alleles at the Pb locus. The proteins were found to be extremely basic, with an isoelectric point above 9.5. They contain approximately 45% of the basic amino acids histidine, lysine, and arginine, and are devoid of cysteine, proline, threonine, valine, methionine, and tryptophan. They are free of carbohydrate. A comparison of the amino acid sequence data of Pb protein to all available amino acid sequences revealed that no sequence similarities exist between the Pb proteins and any other proteins reported, although proteins of similar amino acid compositions have been reported by others. A model is presented with accounts for the several forms of allelic proteins based on observed amino acid sequence differences.
E H Peters, and
E A Azen
November 1971,
Biochemistry,
E H Peters, and
E A Azen
January 1982,
Archives of oral biology,
E H Peters, and
E A Azen
July 1971,
The Biochemical journal,
E H Peters, and
E A Azen
January 1977,
Archives of oral biology,
E H Peters, and
E A Azen
June 1981,
Biochemical genetics,
E H Peters, and
E A Azen
July 1973,
Archives of oral biology,
E H Peters, and
E A Azen
June 1975,
Biochimica et biophysica acta,
E H Peters, and
E A Azen
December 1981,
The Journal of clinical investigation,
E H Peters, and
E A Azen
July 1978,
Journal of dairy science,
E H Peters, and
E A Azen
February 1978,
Biochemical and biophysical research communications,
