It is produced by the strain of Str. coeruleorubidus AB 1183F-64. It has inhibitory effect on Pseudomonas aeruginosa. It also has effect on a few strains of bacteria such as suppurative staphylococcus and Escherichia coli. Serum can reduce its antibacterial activity, pH also affects its antibacterial activity. pH 6.5, The antibacterial activity of Pacidamycin 1 can be enhanced twice. In vivo test of mice infected with pseudomonas aeruginosa (100 mg/kg·d) showed no protective effect.