The FLG2 protein is upregulated by calcium, proteolyzed by calpain 1, and is involved in epithelial homeostasis. FLG2 is also required for proper cornification in skin, with defects in this gene being associated with skin diseases. This protein also has a function in skin barrier protection. In fact, in addition to providing a physical barrier, C-terminal fragments of this protein display antimicrobial activity against P. aeruginosa. [provided by RefSeq, Dec 2015] [taken from NCBI Entrez Gene (Gene ID: 388698)].