THE COMPLETE PRIMARY STRUCTURE OF LATE LACTATION PROTEIN FROM QUOKKA (SETONIX BRACHYURUS)

The complete primary structure of the late lactation protein from the milk of quokka (Setonix brachyurus) is presented. The amino acid seque nce was established by N-terminal sequence analysis of high-performanc e liquid chromatography purified intact protein and peptides isolated from chemical and enzymatic digests of the protein. The protein contai ns 158 residues including four cysteines. The sequence comparison with the tamar wallaby (Macropus eugenii) late lactation protein shows onl y five differences. The protein is identified as a new member of a nov el late lactation protein family present in the milk of marsupials.