Fecha de publicación: -- Fuente: WIPO "biotechnology" A method of treating staphylococcal infectious includes administering to a subject an effective amount of an antibacterial composition having a broad bactericidal activity. The antibacterial composition includes a first antibacterial protein consisting of the amino acid sequence as set forth in SFQ. ID. NO: 1 and/or a second antibacterial protein consisting of the amino acid sequence as set forth in SEQ. ID. NO: 2.