Cationic peptides are short chains of amino acids that carry a positive charge. This positive charge allows them to interact effectively with negatively charged components of bacterial membranes, making them important in the field of antimicrobial research. They are produced by various organisms, including humans, and play a crucial role in the immune response. These peptides exhibit a range of biological activities, including antibacterial, antifungal, and antiviral properties. Their ability to disrupt microbial membranes makes them potential candidates for developing new treatments against infections, especially in an era of increasing antibiotic resistance.