Sr-Spider Polypeptide-4
What is it?
sr-Spider Polypeptide-4 is a single chain recombinant spider protein, produced by fermentation in E. coli. The starting gene is a synthesized copy of the gene from Araneus diadematus which codes for Dragline Silk Protein Spidroin 1. The protein contains a maximum of 617 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
EU regulatory status
Sr-Spider Polypeptide-4 no longer appears in the EU's CosIng inventory. The details on this page come from an earlier version of CosIng. The ingredient's current status can be checked directly in the EU Cosmetics Regulation.
Frequently asked questions
What is Sr-Spider Polypeptide-4?
sr-Spider Polypeptide-4 is a single chain recombinant spider protein, produced by fermentation in E. coli. The starting gene is a synthesized copy of the gene from Araneus diadematus which codes for Dragline Silk Protein Spidroin 1. The protein contains a maximum of 617 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
Is Sr-Spider Polypeptide-4 allowed in cosmetics in the EU?
Not confirmed. Sr-Spider Polypeptide-4 no longer appears in the EU's CosIng inventory, so its current status cannot be confirmed from CosIng.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 04/03/2016