The invention provide isolated peptides, protides and conjugates having novel peptide sequences which are able to induce antimicrobial, anti-cancer, anti-inflammatory, anti-proliferative or programmed cell death activity. The invention also provides a method of inducing programmed cell death in a cell by contacting the cell with an isolated peptide, protide or conjugate described herein. In some aspects, the method can be used in the diagnosis, prevention, or treatment of a disease, such as an infection, cancer, autoimmune disease, or inflammatory disease.
