r-Salmon Oligopeptide-1 sh-Oligopeptide-1 is a single chain recombinant fusion peptide, produced by fermentation in E. coli. The starting gene is synthesized by the fusion of the gene from r-Salmon Oligopeptide-1, and sh-Oligopeptide-1. The fused peptide contains 63 amino acids and consists of the proper sequence of the 20 standard amino acids.