[HTML][HTML] Identification of the phosphorylation sites of cytosolic phospholipase A2 in agonist-stimulated human platelets and HeLa cells

AG Börsch-Haubold, F Bartoli, J Asselin… - Journal of Biological …, 1998 - ASBMB
The present study identifies the phosphorylation sites of the 85-kDa cytosolic phospholipase
A 2 (cPLA 2) in human platelets and HeLa cells. Tryptic digests of 32 P-phosphorylated and-
immunoprecipitated cPLA 2 were analyzed by microbore high performance liquid
chromatography and two-dimensional phosphopeptide mapping against synthetic
phosphopeptide standards. Thrombin stimulated significant phosphorylation of platelet cPLA
2 at two sites, Ser-505 and Ser-727. Exclusive phosphorylation on these two sites was also …