Pertussis toxin inhibits chemotactic peptide-stimulated generation of inositol phosphates and lysosomal enzyme secretion in human leukemic ( HL-60 ) cells ( signal transduction / GTP-binding proteins / phospholipase C / inositol phospholipids )


The binding of the chemotactic peptide Nformyl-methionyl-leucyl-phenylalanine to its cell surface receptor rapidly elicits the hydrolysis of phosphatidylinositol 4,5-bisphosphate by phospholipase C to form the putative second messengers inositol 1,4,5-trisphosphate and sn-1,2-diacylglycerol. To investigate the possible role of a guanine nucleotide binding… (More)

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