Spider Silk

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A material produced by most spiders which has higher tensile strength than steel, and is equal to that of commercial polyaramid filaments—e.g., Twaron or Kevlar. It is extremely lightweight and ductile, can stretch up to 140% of its length without breaking and holds its strength to -40ºC
Composition Complex proteins rich in alternating glycine and alanine, or alanine alone, that self-assemble into a beta sheet conformation
References in periodicals archive ?
Now, let's take this one step further, why bother with a vest: imagine replacing keratin, the protein responsible for the toughness of the human skin, with this spidersilk protein.
Maybe, but we can get a feeling of what this transhumanistic idea would be like by letting a bulletproof matrix of spidersilk merge with an in vitro human skin," she added.