sh-Polypeptide-49 is a single chain synthetic human peptide, produced by fermentation in E. coli. The starting gene is a synthesized copy of the human gene which codes for Fibronectin used as such or adapted to the production host. It contains a maximum of 2386 amino acids which may contain disulfide bonds and/or glycosylation. The protein consists of the proper sequence of the 20 standard amino acids.

sh-Polypeptide-49 is a single chain recombinant human peptide, produced by fermentation in E. coli or Pichia pastoris. The starting gene which is a synthesized copy of the human gene that codes for Fibronectin is used as such or adapted to the production host. It contains a maximum of 2386 amino acids which may contain disulfide bonds and/or glycosylation. The protein consists of the proper sequence of the 20 standard amino acids.