sr-(Methionyl s-Green Mussel Polypeptide-1 Oligopeptide-247) is a single chain fusion peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from s-Green Mussel Polypeptide-1 and Oligopeptide-247 with the initiation code for methionine. The fusion peptide contains amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.