Pichia Extract/sh-Polypeptide-49 is a single chain recombinant peptide produced by fermentation in Pichia, where the final product contains proteins from the Pichia host. The starting gene of sh-Polypeptide-49 is a synthesized copy of the human gene that codes for Fibronectin, and 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.