The function of ENSG00000133710 (SPINK5, serine peptidase inhibitor Kazal type 5) is as follows. Serine protease inhibitor, probably important for the anti- inflammatory and/or antimicrobial protection of mucous epithelia. Contribute to the integrity and protective barrier function of the skin by regulating the activity of defense-activating and desquamation- involved proteases. Inhibits KLK5, its major target, in a pH-dependent manner. Inhibits KLK7, KLK14 CASP14, and trypsin. {ECO:0000269|PubMed:10419450, ECO:0000269|PubMed:17596512, ECO:0000269|PubMed:20533828}.