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The helix is a ubiquitous motif for biopolymers. We propose a heuristic, entropically based model that predicts helix formation in a system of hard spheres and semiflexible tubes. We find that the entropy of the spheres is maximized when short stretches of the tube form a helix with a geometry close to that found in natural helices. Our model could be directly tested with wormlike micelles as the tubes, and the effect could be used to self-assemble supramolecular helices. 相似文献
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Kamien RD 《Science (New York, N.Y.)》2003,299(5613):1671-1673
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Kamien RD 《Science (New York, N.Y.)》2007,315(5815):1083-1084
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Kamien RD 《Science (New York, N.Y.)》2011,333(6038):46-47
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