Formation of complexes between lecithin and apovitellenin I,an avian egg-yolk apoprotein |
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Authors: | Fretheim K Sleigh R W Burley R W |
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Affiliation: | 1.Visiting scientist,
Food Research Laboratory, CSIRO Division of Food Research, P.O. Box 52, 2113, North Ryde, NSW, Australia ; |
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Abstract: | In a study of lipid-protein interactions in egg yolk, it was found that L-α-dipalmitoyl lecithin gave two distinct noncovalent
complexes (A and B) with apovitellenin I, an apoprotein in the major yolk lipoprotein. Interaction took place under widely
varied conditions, and yolk lecithin gave similar complexes. Complex A, which was formed within minutes, consisted of round
particles of about 9 nm diameter. Complex B, which was formed more slowly, consisted of larger, particles. Possibly resembling
curved discs, with diameter of 30–40 nm. The preparation and some properties of these complexes are described. It is suggested
that they may be suitable for an extensive study of phospholipid-protein interactions in yolk. |
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Keywords: | |
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