Maximum entropy analysis of quasielastic light scattering from colloidal dispersions

Livesey, A. K.; Licínio, Pedro; Delaye, M.

doi:10.1063/1.450663

Cited by 139 publications

(75 citation statements)

References 20 publications

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“…To investigate whether the effects of <1 and >0 may result in a fluorescence decay like those observed for protein, time-correlated single-photon counting [17]-type synthetic decay data were generated for a set of parameters  0 ,  and  and then analysed by means of the maximum entropy method (MEM) [18,19].…”

Section: Kinetic Modelmentioning

confidence: 99%

Fluorescence kinetics of tryptophan in a heterogeneous environment

Rolinski¹,

Vyshemirsky²

2014

Methods Appl. Fluoresc.

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The potentially highly informative, but complex fluorescence decay of amino acids in protein is not fully understood and presents a barrier to understanding. Here we have tested a new and general approach to describing experimentally measured the fluorescence decay in a heterogeneous macroscopic sample. The decay parameters carry information on the features of the kinetics induced by the environment's heterogeneity. Bayesian interference demonstrated that the model fits well to the fluorescence decay of tryptophan in Human Serum Albumin (HSA). The approach has the potential to accelerate photophysical research of heterogeneous media and, specifically, to solve a critical outstanding problem in interpreting protein fluorescence, paving the way to further progress in biomedical research.2

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Section: Kinetic Modelmentioning

confidence: 99%

Fluorescence kinetics of tryptophan in a heterogeneous environment

Rolinski¹,

Vyshemirsky²

2014

Methods Appl. Fluoresc.

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“…Theoretical foundations and some earlier applications of the MEM can be found in papers by Skilling & Bryan (1984), Potton, Daniell & Melville (1984), Livesey, Licinio & Delaye (1986), Potton, Daniell & Rainford (1988a) and Hansen (1991). Here, we briefly discuss how the MEM is applied to the analysis of polydisperse rods.…”

Section: Maximum-entropy Methods (Mem)mentioning

confidence: 99%

The Analysis of Small-Angle Scattering Data from Polydisperse Rodlike Particles by Indirect Transform and Maximum-Entropy Methods

Lin¹,

Tsao²

1996

J Appl Cryst

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Both the indirect transform and maximum-entropy methods are developed for analyzing small-angle scattering data from polydisperse rodlike particles to recover the original length distribution. Simulated small-angle scattering data are used to test the ability of these two methods. Both methods are found to be able to recover accurately the original length distribution of the rodlike particles when the full Q-range scattering data are available. However, the maximum-entropy method is not able to recover the original length distribution as accurately as the indirect transform method when the very low Q scattering data are not available. The indirect transform method is successfully applied to the analysis of experimental small-angle scattering data from diheptanoylphosphatidylcholine rodlike micelles. The recovered length distribution of these rodlike miceUes agrees well with that predicted by the 'ladder' thermodynamic model for rodlike micellar systems. This study shows that the indirect transform method described in this paper can be successfully used in the analysis of the small-angle scattering data from polydisperse rodlike particles to recover their length distribution. To use the maximum-entropy method for analyzing the small-angle scattering data from polydisperse rodlike particles, scattering data down to the very low Q limit must be measured in order to recover the length distribution accurately.

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“…Examples of such reconstructions from Laplace transform data can be found in Livesey et al (1986 and1987).…”

Section: Manuscript In Preparation)mentioning

confidence: 99%

Analyzing the Distribution of Decay Constants in Pulse Fluorimetry Using the Maximum Entropy Method

Brochon¹,

Livesey²

1989

Fluorescent Biomolecules

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The maximum entropy method (MEM) is used to analyze time-resolved pulse-fluorescence spectrometry. The central problem in such analyses is the recovery of the distribution of exponentials describing the decay of the fluorescence (i.e., inverting the Laplace transform) which is, in turn, convolved by the shape of the excitation flash. MEM is shown to give high quality results from both computer-generated "noisy" data and experimental data from chemical and biological molecules.The use of the Shannon-Jaynes entropy function is justified and both the theoretical and practical advantages of MEM are presented. The MEM results are easy to interpret and can help to overcome some experimental limitations. In particular MEM could be a powerful tool to analyze the heterogeneity of fluorescent emission of biological macromolecules which can be correlated with their conformational dynamics in solution.

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Maximum entropy analysis of quasielastic light scattering from colloidal dispersions

Cited by 139 publications

References 20 publications

Fluorescence kinetics of tryptophan in a heterogeneous environment

Fluorescence kinetics of tryptophan in a heterogeneous environment

The Analysis of Small-Angle Scattering Data from Polydisperse Rodlike Particles by Indirect Transform and Maximum-Entropy Methods

Analyzing the Distribution of Decay Constants in Pulse Fluorimetry Using the Maximum Entropy Method

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