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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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Protein fluorescence decay : a gamma function description of thermally induced interconversion of amino acid rotamers

Rolinski, O.J. and Scobie, K. and Birch, D.J.S. (2009) Protein fluorescence decay : a gamma function description of thermally induced interconversion of amino acid rotamers. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 79 (5). ISSN 1063-651X

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Abstract

We present a description of fluorescence decay kinetics in complex environments based on gamma functions rather than the conventional approach using exponentials. The gamma function description is tested in measurements on the temperature dependence of the protein human serum albumin (HSA), N-acetyl tryptophanamide (NATA), and 2, 5-dipenyl oxazole (PPO). The monitoring of macromolecular structure and dynamics is demonstrated by means of distinct tryptophan (Trp) rotamer populations and their interconversion in HSA.