Summary
As part of a study of the ‘whey’ proteins of various mammals, a comparison is made of the α-lactalbumins and lysozymes of the kangaroo and horse. In the milk of the red kangaroo (Megaleia rufa) there is only one α-lactalbumin and it occurs throughout lactation, but no lysozyme has been detected. There are two α-lactalbumins in the milk of the grey kangaroo (Macropus giganteus), one, designated α-lactalbumin Zone B, is present throughout lactation; the second, designated α-lactalbumin Zone A, is present only in late lactation. One lysozyme is also present. The milk of the horse (Equus caballus) contains one α-lactalbumin and at least one lysozyme. Partial amino acid sequences are proposed from sequence determination and from analyses of tryptic peptides compared with the known sequences of other α-lactalbumins and lysozymes.
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Bell, K., McKenzie, H.A., Muller, V. et al. Comparative studies of α-lactalbumin and lysozyme: The proteins of kangaroo (Megaleia rufa and Macropus giganteus) and horse (Equus caballus). Mol Cell Biochem 29, 3–9 (1980). https://doi.org/10.1007/BF00230951
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DOI: https://doi.org/10.1007/BF00230951