sr-(Oligopeptide-249 Methionyl sh-Polypeptide-7) is a single chain recombinant peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from Oligopeptide-249, Methionine, and sh-Polypeptide-7. The fusion peptide contains 205 amino acids which may contain disulfide bonds and/or glycosylation and consists of the proper sequence of the 20 standard amino acids.