Regulation of the phosphoinositide hydrolysis pathway in thrombin-stimulated platelets by a pertussis toxin-sensitive guanine nucleotide-binding protein. Evaluation of its contribution to platelet activation and comparisons with the adenylate cyclase inhibitory protein, Gi

In platelets activated by thrombin, the hydrolysis of phosphatidylinositol 4,5-bisphosphate by phospholipase C produces inositol 1,4,5-triphosphate (IP3) and diacylglycerol, metabolites which are known to cause Ca2+ release from the platelet dense tubular system and granule secretion. Previous studi...

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