Hemorphin-7 binds to the angiotensin IV receptor (AT4R), triggering multiple effects including cellular proliferation and memory enhancement. VV-hemorphins and LVV-hemorphins preferentially interact with delta and kappa receptors. LVV-hemorphin-7 potentiates the activity of bradykinin, causing a decrease in blood pressure. Hemorphins are endogenous peptides belonging to the family of atypical opioid peptides released from hydrolyzed hemoglobin.H-Leu-Val-Val-Tyr-Pro-Trp-Thr-Gln-Arg-Phe-OH or H-LVVYPWTQRF-OH