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Energy Transfer Efficiency Distributions in Polymers in Solution During Folding and Unfolding

Goundla Srinivas·Biman Bagchi
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Abstract

Distribution of fluorescence resonance energy transfer (FRET) efficiency between the two ends of a Lennard-Jones polymer chain both at equilibrium and during folding and unfolding has been calculated, for the first time, by Brownian dynamics simulations. The distribution of FRET efficiency becomes {\bf bimodal} during folding of the extended state subsequent to a temperature quench, with the width of the distribution for the extended state broader than that for the folded state. The reverse process of unfolding subsequent to a upward temperature jump shows different characteristics. The distributions show significant viscosity dependence which can be tested against experiments.

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Goundla Srinivas, Biman Bagchi. 2001-05-07. Energy Transfer Efficiency Distributions in Polymers in Solution During Folding and Unfolding. https://arxiv.org/abs/cond-mat/0105138

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