Oligopeptide-91 sh-Polypeptide-2 is a single chain synthetic fusion peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from Oligopeptide-91 and sh-Polypeptide-2. The fusion peptide contains 126 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.