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Most of the water-soluble lipoproteins in sea urchin eggs (Hemicentrotus pulcherrimus) were localized within yolk granules. Under hypotonic conditions, yolk granules released lipoproteins and a 24S protein species as high molecular weight components; the lipoproteins constituted about 40% of the total materials released. Three yolk lipoproteins(YLP-1, 2,(More)
The G-200 flow-through fraction of the extract of sea urchin eggs contained a complex form of glutathione reductase (GR) [EC]. The complex was unstable and gradually dissociated with ain increase in GR activity. The activation was facilitated by high concentrations of EDTA, KCI or (NH4)2SO4. The rate of activation by salts was apparently dependent(More)
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