Is sh-Polypeptide-103 natural?

Produced by fermenting genetically engineered E. coli expressing a human-heat-shock-protein-beta-2-identical sequence built from standard amino acids. No petrochemical alternative route is used commercially.

A lab-made copy of a human heat-shock protein, produced by fermenting engineered bacteria. Used to help protect and condition skin.

CosIng definition: sh-Polypeptide-103 is a single chain recombinant human peptide, produced by fermentation in E. coli. The starting gene is a synthesized copy of the human gene which codes for Heat shock protein beta-2, used as such or adapted to the production host. It contains a maximum of 182 amino acids which may contain disulfide bonds and/or glycosylation. The protein consists of the proper sequence of the 20 standard amino acids.