sr-Sturgeon Polypeptide-2 is a single chain recombinant protein produced by fermentation in E. coli. The starting gene is synthesized to be identical to the gene which codes for Type 2 Collagen Alpha 1 Chain derived from the sturgeon, Acipenser schrenckii. The parent protein contains a maximum of 1421 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence from the 20 standard amino acids.