sh-Oligopeptide-291 SP is a single chain human peptide produced synthetically to be identical to a portion of the protein, Collagen Alpha-3(VI) Chain, and contains 33 amino acids consisting of alanine, arginine, asparagine, glycine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine and valine. The parent peptide contains a maximum of 3177 amino acids which may contain disulfide bonds and/or glycosylation. It consists of the proper sequence from the 20 standard amino acids.