PRSS21 (Serine Protease 21) is a Protein Coding gene. Diseases associated with PRSS21 include Gastric Cancer and Chronic Salpingo-Oophoritis. Among its related pathways are Metabolism of proteins and Post-translational modification- synthesis of GPI-anchored proteins. Gene Ontology (GO) annotations related to this gene include serine-type endopeptidase activity and serine-type peptidase activity. An important paralog of this gene is PRSS41.