ID 3.4.21.59 DE tryptase. AN lung tryptase. AN mast cell protease II. AN mast cell tryptase. AN pituitary tryptase. AN skin tryptase. CA Preferential cleavage: Arg-|-Xaa, Lys-|-Xaa, but with more restricted CA specificity than trypsin. CC -!- Occurs as a tetrameric molecule with high affinity for heparin, CC in mast cell granules. CC -!- Not inhibited by alpha-1-proteinase inhibitor of alpha-2- CC macroglobulin. CC -!- Belongs to peptidase family S1. DR Q15661, TRYB1_HUMAN; Q02844, TRYB1_MOUSE; P27435, TRYB1_RAT ; DR P20231, TRYB2_HUMAN; P21845, TRYB2_MOUSE; P50343, TRYB2_RAT ; DR Q9BZJ3, TRYD_HUMAN ; P15944, TRYT_CANLF ; P50342, TRYT_MERUN ; DR Q9N2D1, TRYT_PIG ; Q9XSM2, TRYT_SHEEP ; //