r-Clostridium Histolyticum Collagenase H Hexapeptide-40 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-Clostridium Histolyticum Collagenase H and Hexapeptide-40. The fusion peptide contains 1027 amino acids, and consists of the proper sequence of the 20 standard amino acids.