Abstract
The silks produced by spiders are exceptional structural materials. Although their tensile strengths are similar to those of cellulose, collagen and chitin, their extensibilities are considerably greater1,2. Thus, the energy required to break spider silk (that is, its toughness) can be 10 times greater than for these other biological materials. The silks are crystalline proteins, with substantial portions of their polypeptide chains forming crystallites of stacked β -pleated sheets3–6. However, the extensibility of silk is attributed to noncrystalline regions, which appear amorphous on X-ray diffraction7,8. The mechanical properties and macromolecular conformation of these amorphous regions have been the subject of much speculation1,2,7–10, but little direct experimentation. Here we show that these regions can behave as rubber networks and exhibit rubber-like or entropy elasticity.
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References
Denny, M. W. J. exp. Biol. 65, 483–506 (1976).
Denny, M. W. Mechanical Properties of Biological Materials (eds Vincent, J. F. V. & Currey, J. D.) 247–272 (Cambridge University Press, 1976).
Warwicker, J. O. Acta crystallogr. 7, 565–573 (1954).
Warwicker, J. O. Trans. Faraday Soc. 52, 554–557 (1956).
Warwicker, J. O. J. molec. Biol. 2, 350–362 (1960).
lizuka, E. Biorheology 3, 1–8 (1965).
Lucas, F., Shaw, J. T. B. & Smith, S. G. J. Text. Res. 46, T440–T452 (1965).
Hepburn, H. R., Chandler, A. D. & Davidoff, M. R. Insect Biochem. 9, 69–77 (1979).
Work, R. W. & Morosoff, N. Text. Res. J. 52, 349–356 (1982).
Work, R. W. Text. Res. J. 47, 650–662 (1977).
Flory, P. J. Principles of Polymer Chemistry (Cornell University Press, 1953).
Dorrington, K. L. & McCrum, N. G. Biopolymers 16, 1201–1222 (1977).
Anarady, D. L. & Mark, S. E. Biopolymers 19, 849–855 (1980).
Gosline, J. M. Mechanical Properties of Biological Materials (eds Vincent, J. F. V. & Currey, J. D.) 849–257 (Cambridge University Press, 1980).
Wainwright, S. A., Biggs, W. D., Currey, J. D. & Gosline, J. M. Mechanical Designs in Organisms (Edward Arnold, London, 1980).
Shadwick, R. E. & Gosline, J. M. Science 213, 759–761 (1981).
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Gosline, J., Denny, M. & DeMont, M. Spider silk as rubber. Nature 309, 551–552 (1984). https://doi.org/10.1038/309551a0
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DOI: https://doi.org/10.1038/309551a0
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