Abstract
1. Electrophoreses on the mixtures of β-lipovitellin and a series of polyanions (RNA, heparin, and alginic acid) have represented the reversible formation of soluble complexes between the components.
2. The influences of pH and ionic strength to the interaction have shown that not only the electrostatic forces but also the van der Waals forces contribute to stabilize the interaction.
3. The affinities of three polyanions to β-lipovitellin have been compared by their mean equivalent weights.
4. From the electrophoretic patterns, it has been concluded that the polyanions form the complex with β-lipovitellin without splitting off the lipid-protein bond.
5. An attempt of quantitative interpretation of the interaction has been made.
The author wishes to express his sincere thanks to Prof. N. Ui of Gumma University for his valuable suggestions.
