Abstract
ZONE electrophoresis on starch revealed that purified sheep prolactin contained, according to Cole and Li1, three, and, according to Ferguson and Wallace2, four, components. All these components were found to have biological activity when tested by the crop sac test in pigeons2. However, Reisfeld et al.3, testing the biological activity of purified components, found one of these components to be a highly active prolactin, whereas the two further components were biologically loss active; these authors considered the latter fractions altered the form of the active hormone.
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References
Cole, R. D., and Li, C. H., Biochim. Biophys. Acta, 33, 593 (1959).
Ferguson, K. A., and Wallace, A. L. C., Nature, 190, 629 (1961).
Reisfeld, R. A., Tong, G. L., Rickes, E. L., Brink, N. G., and Steelman, S. L., J. Amer. Chem. Soc., 83, 3717 (1961).
Laron, Z., and Assa, S., Acta Endocrinol., 40, 311 (1962).
Ferguson, K. A., and Wallace, A. L. C., Nature, 190, 632 (1961).
Laron, Z., and Assa, S., Nature, 194, 491 (1962).
Kantor, Z., and Arbesman, C., J. Allergy, 30, 114 (1959).
Hayashida, T., and Li, C. H., Endocrinology, 65, 944 (1959).
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LARON, Z., ASSA, S. Immunological Investigations of Sheep Prolactin. Nature 197, 299–300 (1963). https://doi.org/10.1038/197299a0
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DOI: https://doi.org/10.1038/197299a0
