Binds to bacterial lipopolysaccharides (LPS) and has antibacterial activity. Acts via neutrophil N-formyl peptide receptors to enhance the release of CXCL2. Expressed in epithelia of various organs. Most abundant peptide levels are found in organs lining outer or inner body surfaces, such as organs of the respiratory or gastrointestinal tract. Proteolytically cleaved by cathepsin CTSG. Belongs to the cathelicidin family.