– Plasma membrane-anchored serine protease that directly induces processing of pro-uPA/PLAU into the active form through proteolytic activity. Seems to be capable of activating ENaC. TMPRSS4 Protein, Mouse, Recombinant (His & SUMO) is expressed in E. coli expression system with N-6xHis-SUMO tag. The predicted molecular weight is 57.8 kDa and the accession number is Q8VCA5.