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The helix--coil transition on the worm--like chain | | Alex J. Levine
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30 Dec 2003 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | I propose a variation of the standard worm--like chain model to account for internal order parameter (helix/coil) fields on the polymer chain. This internal order parameter field influences polymer conformational statistics by locally modifying the persistence length of the chain. Using this model, I make predictions for the bending and stretching response of an alpha-helical domain of a protein. In particular, I show that alpha-helical protein domains will buckle under applied torque. This highly nonlinear elastic behavior may be important in the understanding of allosteric control of biochemical pathways. | | Source: | arXiv, cond-mat/0401624 | | Services: | Forum | Review | PDF | Favorites | |
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