A novel antimicrobial peptide is provided having an inhibitory effect on biofilms produced by biofilm-forming bacteria. The peptide is effective against wide range bacterial targets； generates no antimicrobial resistance； agglutinates bacteria cells enhancing the pathogen removal at the infectious focus； promotes biofilm eradication and prevents biofilm development. Compositions comprising the peptide are provided to treat and prevent infectious diseases, and for other uses such as the disinfection of medical and surgical materials.
