Bryan J
J Cell Biol. 1970 Mar;44(3):635-45. doi: 10.1083/jcb.44.3.635.
Procedures for isolating the contents of the cortical granules from the ova of the sea urchin, Strongylocentrotus purpuratus, are reported. Dithiothreitol is used to remove the vitelline coat; the "demembranated" eggs are then subsequently activated with butyric acid. By means of these procedures, the hyaline protein and crystalline or paracrystalline material have been isolated from the cortical granules. The crystalline material consists of sheets of cylinders or tubules 150-200 A in diameter. This material is believed to be a major structural element of the fertilization membrane which, in the absence of the vitelline coat, does not form.
本文报道了从紫海胆(Strongylocentrotus purpuratus)的卵子中分离皮质颗粒内容物的方法。使用二硫苏糖醇去除卵黄膜;然后用丁酸激活“去膜”卵子。通过这些方法,已从皮质颗粒中分离出透明蛋白和结晶或准结晶物质。结晶物质由直径为150 - 200埃的圆柱或小管片组成。这种物质被认为是受精膜的主要结构成分,在没有卵黄膜的情况下,受精膜不会形成。