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Formation of lysinoalanine from individual bovine caseins

Published online by Cambridge University Press:  01 June 2009

William Manson  and
Thomas Carolan
William Manson
Affiliation:
The Hannah Research Institute, Ayr, Scotland, KA6 5HL
Thomas Carolan
Affiliation:
The Hannah Research Institute, Ayr, Scotland, KA6 5HL
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Summary

The formation of lysinoalanine, N-є-(2-amino-2-carboxyethyl)-L-lysine, by treatment of αs0-, αsl- and β-casein with alkali, has been studied. In all 3 proteins lysinoalanine was formed by reaction of lysyl residues with dehydroalanyl residues produced by alkaline degradation of those phosphoseryl residues which occupy isolated positions in the proteins' structures. The contribution to lysinoalanine production made by phosphoseryl residues which were arranged in clusters, as occurs in the sequence -Ser(P)-Ser(P)-Ser(P)-, was not significant.

Type
Original Articles
Information
Journal of Dairy Research , Volume 47 , Issue 2 , June 1980 , pp. 193 - 198
Copyright
Copyright © Proprietors of Journal of Dairy Research 1980

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