NCIt definition : Plasma kallikrein (638 aa, 71 kDa) is encoded by the human KLKB1 gene. This protein
plays a role in the mediation of proteolysis.;
NCIt note : Plasma kallikrein must be cleaved by factor XIIa to be enzymatically active. Substrates
for the active form of plasma kallikrein include factor XII and kininogen. (UniProt);