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 ?
Compared gram for gram, dragline silk (the line of silk spiders leave behind them wherever they go) is five times stronger than steel and much tougher than Kevlar (the stuff bulletproof vests are made of).