Catalytic activity:Preferential cleavage: Arg-|-Xaa , Lys-|-Xaa , but with more restricted specificity than trypsin. ,Function:Tryptase is the major neutral protease present in mast cells and is secreted upon the coupled activation-degranulation response of this cell type. ,Function:Tryptase is the major neutral protease present in mast cells and is secreted upon the coupled activation-degranulation response of this cell type. Has an immunoprotective role during bacterial infection. Required to efficiently combat K.pneumoniae infection. ,polymorphism:There are two alleles; beta-II and beta-III which differ by 3 residues. ,similarity:Belongs to the peptidase S1 family. ,similarity:Belongs to the peptidase S1 family. Tryptase subfamily. ,similarity:Contains 1 peptidase S1 domain. ,subcellular location:Released from the secretory granules upon mast cell activation. ,subunit:Homotetramer. ,
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