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MW: 86,000-88,000
Extinction Coefficient: 1.06

Frozen in 20 mM Tris-HCl, pH 7.8, with 100 mM NaCl

A serine protease that releases bradykinin from kininogen. Present in plasma as an inactive precursor prokallikrein.

Activity: 15 units per mg. One unit is defined as the amount of enzyme that hydrolyzes one umole of D-Pro-Phe-Arg-pNA per minute at 25°C, pH 7.8.

Storage: -70°C or lower

Purity: >=95% by SDS-PAGE

Prepared from plasma shown to be non reactive for HBsAg, anti-HCV, anti-HBc, and negative for anti-HIV 1 & 2 by FDA-required tests.

Athens Research & Technology products are laboratory reagents and are not to be administered to humans or used for any drug purpose. For research or further manufacturing use only.