Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-12-02T22:22:48.207Z Has data issue: false hasContentIssue false

Heat-induced interaction of β-lactoglobulin and κ-casein

Published online by Cambridge University Press:  01 June 2009

G. H. McKenzie
Affiliation:
Russell Grimwade School of Biochemistry, University of Melbourne, Parkville, Victoria 3052, Australia
R. S. Norton
Affiliation:
Russell Grimwade School of Biochemistry, University of Melbourne, Parkville, Victoria 3052, Australia
W. H. Sawyer
Affiliation:
Russell Grimwade School of Biochemistry, University of Melbourne, Parkville, Victoria 3052, Australia

Summary

The interaction of β-lactoglobulin and κ-casein at high temperature was studied polarimetrically. The rate of interaction was related to the genetic variant of β-lactoglobulin present. β-Lactoglobulin B, whose thermodenaturation was faster than that of A variant, interacted more rapidly with κ-casein than did the A variant. Velocity sedimentation studies indicated that characteristics of the complex were determined more by the β-lactoglobulin than by the κ-casein. The presence of κ-casein during the thermodenaturation of β-lactoglobulin appeared to prevent the aggregation of β-lactoglobulin from proceeding to completion, the κ-casein complexing with intermediate species and restricting the aggregation process.

Type
Original Articles
Copyright
Copyright © Proprietors of Journal of Dairy Research 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Armstrong, J. MCD., Mckenzie, H. A. & Sawyer, W. H. (1967). Biochim. biophys. Acta 147, 60.CrossRefGoogle Scholar
Guggenheim, E. A. (1926). Phil. Mag. 2, 538.CrossRefGoogle Scholar
Kannan, A. & Jenness, R. (1961). J. Dairy Sci. 44, 808.CrossRefGoogle Scholar
Kawahara, K., Kirshner, A. G. & Tanford, C. (1965). Biochemistry 4, 1203.CrossRefGoogle Scholar
Mckenzie, H. A. (1967). Adv. Protein Chem. 22, 56.Google Scholar
Mckenzie, H. A. & Sawyer, W. H. (1967). Nature, Lond. 214, 1101.CrossRefGoogle Scholar
Mckenzie, H. A., Sawyer, W. H. & Smith, M. B. (1967). Biochim. biophys. Acta 147, 73.CrossRefGoogle Scholar
Purkayastha, R., Tessier, H. & Rose, D. (1967). J. Dairy Sci. 50, 764.CrossRefGoogle Scholar
Sawyer, W. H. (1966). Thesis, Australian National University.Google Scholar
Sawyer, W. H. (1969). J. Dairy Sci. 52, 1347.CrossRefGoogle Scholar
Sawyer, W. H., Coulter, S. T. & Jenness, R. (1963). J. Dairy Sci. 46, 564.CrossRefGoogle Scholar
Sawyer, W. H., Norton, R. S., Nichol, L. W. & Mckenzie, G. H. (1971). Biochim. biophys. Acta 243, 19.CrossRefGoogle Scholar
Tessier, H., Yaguchi, M. & Rose, D. (1969). J. Dairy Sci. 52, 139.CrossRefGoogle Scholar
Trautman, J. C. & Swanson, A. M. (1958). J. Dairy Sci. 41, 715.Google Scholar
Zittle, C. A. & Custer, J. H. (1963). J. Dairy Sci. 46, 1183.CrossRefGoogle Scholar
Zittle, C. A., Thompson, M. P., Custer, J. H. & Cerbulis, J. (1962). J. Dairy Sci. 45, 807.CrossRefGoogle Scholar