## Abstract The pH versus proteinase activity curve (casein or hemoglobin plus urea substrate) for homogenates of unfertilized __Lytechinus__ eggs reveals two regions of maximum activity: one between pH 3.5 and 4.3, and another of far greater magnitude from pH 8.0 to 11.0. The two classes of protei
Properties of glycogen phosphorylase before and after fertilization in the sea urchin eggs
โ Scribed by M. Bergami; T.E. Mansour; E. Scarano
- Book ID
- 118875263
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 365 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0014-4827
No coin nor oath required. For personal study only.
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## Abstract Ghosts were prepared from sea urchin eggs, before and after fertilization. Eggs were treated with Mg^++^ to stabilize the surface. Cytoplasm was then released by osmotically lysing the cells and washing repeatedly at low ionic strength. Microscopically, the resultant ghosts appear to co
## Abstract Decreased glycogen radioactivity was followed as an indicator of glycogen utilization following activation of __Strongylocentrotus purpuratus__ eggs. Within 15 minutes of exposure to sperm or ammonia, egg glycogen radioactivity decreased. The level of radioactivity in control (unfertili