Description_x000D_ Application_x000D_ Kininogen, low molecular weight from human plasma has been used to study rMASP-1 (recombinant mannose-binding lectin-associated serine protease 1)-mediated cleavage of LK (low molecular weight kininogen). It has been used as a standard for protein identification in milk-proteomics study._x000D_ Biochem/physiol Actions_x000D_ LMW kininogen is a major extracellular cysteine proteinase inhibitor. Tissue kallikrein releases bradykinin, a potent bronchoconstrictor and vasoactive agent, from both HMW and LMY kininogen._x000D_ Physical form_x000D_ Lyophilized from a solution in sodium acetate and sodium chloride.