Physical and Chemical Properties of Bovine Milk and Colostrum Whey M-1 Glycoproteins
Open Access
- 1 September 1967
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 50 (9) , 1368-1375
- https://doi.org/10.3168/jds.s0022-0302(67)87637-9
Abstract
The M-1 acidic glycoprotein fractions isolated from samples of bovine colostrum and milk whey, although homogeneous by ultracentrifugal and boundary electrophoresis criteria, contained several N-terminal amino acids, and probably consisted of a series of closely related molecular species. Their average molecular weights were near 10,000 with high [beta]-values and negative specific rotations, indicating highly disorganized structures. Amino acid analysis showed high percentages of glutamic acid, proline, threonine, and isoleucine, and unusually low amounts of the basic amino acids. Monosaccharides found in the colostrum M-l glycoprotein fractions were galactose, glucosamine, galacto-samine, and sialic acid, the latter being easily removable by viral neuraminidase.This publication has 15 references indexed in Scilit:
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