sr-(Staphylococcus Phage 187 Polypeptide-1 Streptococcus Suis Polypeptide-1 Dipeptide-12) is a single chain recombinant peptide produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from sr-Staphylococcus Phage 187 Polypeptide-1, sr-Streptococcus Suis Phage Polypeptide-1, and Dipeptide-12. The fusion peptide contains 249 amino acids which may contain disulfide bonds and/or glycosylation.