Recombinant Spider Silk Proteins
topic
Biosynthetic spider silk proteins produced via genetic engineering (E. coli, yeast, silkworms, goats, plants expressing spider silk genes), purified, and spun into fibres. Properties approach natural spider silk: high tenacity (4-8 g/den achieved, target >10 g/den), elongation 15-30%, toughness exceeding Kevlar, biodegradable, biocompatible. Companies: Bolt Threads (Microsilk), Spiber (Brewed Protein), AMSilk.
Role
Biotechnology breakthrough enabling scalable production of spider silk-like materials without spider farming, targeting high-performance applications (protective gear, medical devices) and luxury fashion sustainability narratives.