doi: 10.1016/s0006-3495(62)86857-x.
Elastic Moduli of Helical Polypeptide Chain Structures
- PMID: 19431316
- PMCID: PMC1366394
- DOI: 10.1016/s0006-3495(62)86857-x
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Elastic Moduli of Helical Polypeptide Chain Structures
Biophys J.
1962 Jul.
Abstract
The elastic moduli of the alpha-helix, polyglycine II, and the parallel-chain and antiparallel-chain pleated sheet structures have been calculated. A Urey-Bradley type of potential was used, extended by the inclusion of hydrogen bond stretching terms where appropriate. In the one instance where a valid comparison with experimental data can be made, viz, alpha-keratin, the calculations indicate that the matrix component, rather than being amorphous, probably contains an ordered structure of higher modulus than the alpha-helix.
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