cationic proteins
Proteins of azurophil granules of neutrophils, rich in arginine. A chymotrypsin-like protease found in azurophil granules is also very cationic as is cathepsin G and neutrophil elastase. Eosinophil cationic protein (21 kD) is particularly important because it damages schistosomula in vitro.

Dictionary of molecular biology. 2004.

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