Inhibits angiotensin-converting enzyme (ACE) with a Ki of 1.2 uM, targets B1 bradykinin receptors (BDKRB1), and potentiates the smooth muscle contraction elicited by bradykinin. In vivo, induces hyperalgesic effects in living rats after intraplantar injection. Expressed by the venom gland. Monoisotopic mass. Is hydrolyzed by angiotensin-converting enzyme (ACE) by only 7.5% (compared to bradykinin). Not able to contract smooth muscle preparation (ileum). Belongs to the bradykinin-related peptide family.