title: The amino-acid sequence of two isoforms of alpha-lactalbumin from donkey (Equus asinus) milk is identical.
abstract: The complete primary structure of donkey alpha-lactalbumin A and B has been determined by sequencing of the peptides obtained after tryptic, Glu-C proteinase or cyanogen bromide cleavage. Although preparative purification of alpha-lactalbumin by flat-bed isoelectric focusing gave two protein fractions A and B, their amino-acid sequence revealed no differences. Donkey alpha-lactalbumin shows two, four and five differences in comparison to the horse alpha-lactalbumin A, B and C. Thus donkey alpha-lactalbumin is homogeneous and belongs to the horse A-type variant.
authors: Centro Studi Alimentazione Animali, CNR, Torino, Italy.
authors: M G
authors: MG
authors: Giufrida
authors: A
authors: A
authors: Cantisani
authors: L
authors: L
authors: Napolitano
authors: A
authors: A
authors: Conti
authors: J
authors: J
authors: Godovac-Zimmermann
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D007768:Lactalbumin / Q000737:chemistry*; D008892:Milk / Q000737:chemistry*; D008969:Molecular Sequence Data; D010527:Perissodactyla; D017386:Sequence Homology, Amino Acid
chemical_list: D007768:Lactalbumin