Calmodulin-dependent stimulation of the NADPH oxidase of human neutrophils.


The NADPH oxidase of human neutrophils is highly sensitive to calcium concentration and is inhibited in intact cells and cell-free preparations by various phenothiazine drugs. Addition of calmodulin to preparations of NADPH oxidase stimulates enzymatic rates from 1.4-2.5-fold. Addition of calmodulin and calcium, but not calcium alone, to NADPH oxidase… (More)


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