ECB-ART-37071Dev Growth Differ 1998 Dec 01;406:669-76. doi: 10.1046/j.1440-169x.1998.t01-5-00011.x.
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Detection of phospholipase Cgamma in sea urchin eggs.
Phosphorylation on tyrosine and turnover of polyphosphoinositide metabolism are rapidly stimulated after fertilization. However, the interconnection between these pathways remains to be determined. In the present paper it is demonstrated that eggs of two different sea urchin species contain tyrosine phosphorylated proteins with calcium-sensitive phospholipase C activity. We have investigated whether phospholipase Cgamma (PLCgamma), characteristic of tyrosine kinase receptors, could be responsible for this activity. Western blot and immunocytochemistry performed with antibodies directed against PLCgamma revealed the presence of this protein in cortical regions. It was also observed that PLCgamma displayed calcium-sensitive activity. The present results suggest that PLCgamma may be part of the cascade of events leading to the calcium signal responsible for egg activation at fertilization.
PubMed ID: 9865977
Article link: Dev Growth Differ
Genes referenced: LOC100887844
Antibodies: LOC579102 Ab1 LOC579102 Ab2