Characterization of baboon (Papio hamadryas) milk proteins

A. J. Hall, A. Masel, K. Bell, J. A. Halliday, D. C. Shaw, J. L. Vandeberg

    Research output: Contribution to journalArticlepeer-review

    9 Scopus citations

    Abstract

    The major proteins of baboon milk were identified as β-lactoglobulin (βLG), α-lactalbumin (αLA), lysozyme, lactoferrin, casein, and albumin by immobiline isoelectric focusing, SDS-PAGE, immunoblotting of gels with rabbit antisera to human αLA, lysozyme, and albumin and bovine βLG and casein, and N-terminal sequencing of proteins blotted from gels. The first 30 N-terminal residues of baboon βLG are identical to those of macaque (Macaca fasicularis) βLG except for a (D/N) polymorphism at residue 2. The complete cDNA sequence and derived amino acid composition of βLG were elucidated using RT-PCR amplification of poly(A)+ mRNA purified from lactating mammary gland. Baboon βLG consists of 168 amino acid residues (Mr 20, 750) and is the longest βLG identified to date. βLG and αLA polymorphisms with three (A, B, and C) and two (A and B) variants, respectively, were detected by immobiline IEF, pH 4-6, of individual baboon milk samples at varying stages of lactation.

    Original languageEnglish (US)
    Pages (from-to)59-71
    Number of pages13
    JournalBiochemical Genetics
    Volume39
    Issue number1-2
    DOIs
    StatePublished - 2001

    Keywords

    • Baboon
    • Milk
    • Polymorphism
    • cDNA
    • β-lactoglobulin

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Biochemistry
    • Molecular Biology
    • Genetics

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