>tr|I3L2G7|I3L2G7_HUMAN Serine protease 21 (Fragment) OS=Homo sapiens OX=9606 GN=PRSS21 PE=4 SV=1 XRGAAAGAAAGSGWTQEAGVAGGGAVIRTMRPTGHHVAHRGWRGRRTRALAVAGEPAPVG FPRMRSEPAQPPLGTHGGALL