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Physics of thick polymers
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UNSPECIFIED (2005) Physics of thick polymers. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 43 (6). pp. 650-679. doi:10.1002/polb.20363 ISSN 0887-6266.
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Official URL: http://dx.doi.org/10.1002/polb.20363
Abstract
We present the results of analytical calculations and numerical simulations of the behavior of a new class of chain molecules that we call thick polymers. The concept of the thickness of such a polymer, viewed as a tube, is encapsulated by a special three-body interaction and impacts on the behavior both locally and nonlocally. When thick polymers undergo compaction because of an attractive self-interaction, we find a new type of phase transition between a compact phase and a swollen phase at zero temperature with increasing thickness. In the vicinity of this transition, short tubes form space-filling helices and sheets as observed in protein native-state structures. With increasing chain length, or with an increasing number of chains, we numerically find a crossover from secondary-structure motifs to a quite distinct class of structures akin to the semicrystalline phases of polymers or amyloid fibers in polypeptides. (C) 2005 Wiley Periodicals, Inc.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | ||||
Publisher: | JOHN WILEY & SONS INC | ||||
ISSN: | 0887-6266 | ||||
Official Date: | 15 March 2005 | ||||
Dates: |
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Volume: | 43 | ||||
Number: | 6 | ||||
Number of Pages: | 30 | ||||
Page Range: | pp. 650-679 | ||||
DOI: | 10.1002/polb.20363 | ||||
Publication Status: | Published |
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