PRSS42 encodes the human gene, Protease, serine 42. It may also be known as: Serine protease 42; Serine protease 42 ; Testis serine protease 2; TESSP2; protease, serine, 42. The encoded protein is an enzyme with an amino acid length of 293 and a mass of 32.0 kDa. PRSS42 is a member of the Peptidase S1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat.