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Biophysical Journal 61: 235-245 (1992)
© 1992 the Biophysical Society

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Determination of rate distributions from kinetic experiments.

P J Steinbach, K Chu, H Frauenfelder, J B Johnson, D C Lamb, G U Nienhaus, T B Sauke and R D Young

Department of Physics, University of Illinois, Urbana-Champaign 61801.

ABSTRACT

Rate processes in proteins are often not adequately described by simple exponential kinetics. Instead of modeling the kinetics in the time domain, it can be advantageous to perform a numerical inversion leading to a rate distribution function f(lambda). The features observed in f(lambda) (number, positions, and shapes of peaks) can then be interpreted. We discuss different numerical techniques for obtaining rate distribution functions, with special emphasis on the maximum entropy method. Examples are given for the application of these techniques to flash photolysis data of heme proteins.




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Copyright © 1992 by the Biophysical Society.