sr-(Methionyl sh-Oligopeptide-116 s-Clostridium Botulinum Polypeptide-1) is a single chain recombinant peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the genes from sh-Oligopeptide-116 and s-Clostridium Botulinum Polypeptide-1 with the initiation codon for methionine. The fusion peptide may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids