This gene encodes a member of the kallikrein subfamily of the peptidase S1 family of serine proteases. The kallikrein genes are present in a large gene cluster on chromosome 7. The encoded preproprotein is proteolytically processed to generate a mature protein product. Expression of this gene in the submandibular gland is sexually dimorphic likely due to both transcriptional and post-transcriptional regulation. This gene is thought to be distinct from the Egfbp2 gene (Gene ID: 13647), with which it shares 98% identity (PMIDs: 1959648, 9685728), however, it is not clear if both genes are present in all strains of mice. [provided by RefSeq, Sep 2015]