A serine protease that releases bradykinin from kininogen. Present in plasma as an inactive precursor prokallikrein.
Source:
Kallikrein, from human plasma.
Specific Activity:
15units/mg
Unit Definition:
One unit is defined as the amount of enzyme that hydrolyzes one umol of D-Pro-Phe-Arg-pNA
per minute at 25 degrees C, pH 7.8.
Molecular Weight:
~86-88kD
Storage and Stability:
Aliquot to avoid repeated freezing and thawing and store at -70 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
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