Human Neutrophil Elastase

Chromatographically purified from human leukocytes. The neutrophil form of elastase is 218 amino acids long, with two asparagine-linked carbohydrate chains. No detectable amounts of Cathepsin G or MPO. Provided in solution in 50mM Na Acetate; 0.6M NaCl; pH 5.5, stability > 1 year at 4°C. Activity >10 u/ml @ 37°C. One unit will hydrolyze one micromole of Methoxy succinyl-alanine-alanine-proline-valine-p-nitroanilide per minute at 37°C and pH 7.5.