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Title: Bending elasticity of macromolecules: Analytic predictions from the wormlike chain model
Authors: Polley, Anirban
Samuel, J.
Sinha, Supurna
Issue Date: Jan-2013
Publisher: American Physical Society
Citation: Physical Review E, 2013, Vol.87, p012601
Abstract: We present a study of the bend angle distribution of semiflexible polymers of short and intermediate lengths within the wormlike chain model. This enables us to calculate the elastic response of a stiff molecule to a bending moment. Our results go beyond the Hookean regime and explore the nonlinear elastic behavior of a single molecule. We present analytical formulas for the bend angle distribution and for the moment-angle relation. Our analytical study is compared against numerical Monte Carlo simulations. The functional forms derived here can be applied to fluorescence microscopic studies on actin and DNA. Our results are relevant to recent studies of “kinks” and cyclization in short and intermediate length DNA strands.
Description: Open Access.
ISSN: 1539-3755
1550-2376 (Online)
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Copyright: 2013 The American Physical Society
Appears in Collections:Research Papers (TP)

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