The present invention provides a new use of an antimicrobial peptide having a given amino acid sequence for treating the infection of Trichomonas, Candida or Propionibacterium species. A pharmaceutical composition for treating the infection of Trichomonas, Candida or Propionibacterium species or killing the above mentioned microorganisms, which comprises an effective amount of the peptide of the present invention is also provided.本發明係提供一種特定胺基酸序列之抗菌蛋白之抗滴蟲(Trichomonas)、念珠菌屬(Candida)或丙酸桿菌屬(Propionibacterium)微生物感染之新用途。本發明亦提供一種用於治療滴蟲、念珠菌屬或丙酸桿菌屬微生物感染或致前述微生物死亡之醫藥組合物，其係包含有效量之本發明抗菌蛋白。
