sr-(sh-Polypeptide-2 Oligopeptide-192 Oligopeptide-193) is a single chain fusion peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from sh-Polypeptide-2, Oligopeptide-192, and Oligopeptide-193. The fusion peptide contains 105 amino acids which may contain disulfide bonds and/or glycosylation and consists of the proper sequence from the 20 standard amino acids.