[Primary structure of the casein macropeptide of kappa casein of buffalo].
The complete amino acid sequence of Italian water buffalo (Bubalus arnee) caseinomacropeptide, the C-terminal fragment released from kappa-casein by chymosin, has been determined. It contains 64 amino acid residues including one phosphoserine and differs from its bovine (Bos taurus) B counterpart by 10 amino acid substitutions. The sequence of the last 11 amino acid residues of para-kappa-casein is also reported. In relation to the Ala148/Asp substitution which is responsible for the different electrophoretic behaviour of bovine kappa-caseins B and A, water buffalo kappa-casein is homologous to the bovine variant B. It is suggested that a variant Thr136-Ala148 might be the wild type of the Bos genus.
D000595:Amino Acid Sequence; D000818:Animals; D002020:Buffaloes / Q000378:metabolism*; D002364:Caseins; D012085:Chymosin; D010446:Peptide Fragments / Q000032:analysis; D010455:Peptides
D002364:Caseins; D010446:Peptide Fragments; D010455:Peptides; D012085:Chymosin
Structure primaire du caséinomacropeptide de la caséine kappa de buffle.