Glandular kallikreins cleave Met-Lys and Arg-Ser bonds in kininogen to release Lys-bradykinin. (Microbial infection) Cleaves Neisseria meningitidis NHBA in saliva; Neisseria is an obligate commensal of the nasopharyngeal mucosa. . This is the function of KLK1 (kallikrein 1, ENSG00000167748).