Abstract:
The classical three-point method for obtaining a diffusion coefficient of probes from the fluorescence recovery function in the Fluorescence Recovery After Photobleaching (FRAP) technique, when Gaussian or uniform spot-photobleaching profiles are used, leads to an expression that is not suitable for linear fittings. Therefore, determination of the diffusion coefficient is complex and very dependent on the recovery time. In this work we propose a new solution for the fluorescence recovery function after spot-bleaching using a Gaussian beam, which is a better alternative method than the three-point method for the data analysis of the FRAP kinetics. The new method can be applied for shorter recovery times thereby minimizing errors due to convective effects. It leads to a linear relationship between the recovery function and the diffusion coefficient and, as shown in the analysis of a model case, allows a more accurate determination of the diffusion coefficient of fluorescent probes. © 2008 Springer Science+Business Media, LLC.
Registro:
Documento: |
Artículo
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Título: | An alternate solution of the fluorescence recovery kinetics after spot-bleaching for measuring diffusion coefficients. 1. Theory and numerical analysis |
Autor: | Frank, G.A.; Marconi, M.C.; Corti, H.R. |
Filiación: | Laboratorio de Electrónica Cuántica, Departamento de Física, Universidad de Buenos Aires, Buenos Aires 1428, Argentina NSF ERC for Extreme Ultraviolet Science and Technology, Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80525, United States Departamento de Fisica de Materia Condensada, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, San Martin, Buenos Aires 1650, Argentina Instituto de Química Física de los Materiales, Ambiente y Energía (INQUIMAE), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428, Argentina
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Palabras clave: | Diffusion; Fluorescence recovery; FRAP; Photobleaching |
Año: | 2008
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Volumen: | 37
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Número: | 11
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Página de inicio: | 1575
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Página de fin: | 1591
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DOI: |
http://dx.doi.org/10.1007/s10953-008-9330-y |
Título revista: | Journal of Solution Chemistry
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Título revista abreviado: | J. Solut. Chem.
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ISSN: | 00959782
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00959782_v37_n11_p1575_Frank |
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Citas:
---------- APA ----------
Frank, G.A., Marconi, M.C. & Corti, H.R.
(2008)
. An alternate solution of the fluorescence recovery kinetics after spot-bleaching for measuring diffusion coefficients. 1. Theory and numerical analysis. Journal of Solution Chemistry, 37(11), 1575-1591.
http://dx.doi.org/10.1007/s10953-008-9330-y---------- CHICAGO ----------
Frank, G.A., Marconi, M.C., Corti, H.R.
"An alternate solution of the fluorescence recovery kinetics after spot-bleaching for measuring diffusion coefficients. 1. Theory and numerical analysis"
. Journal of Solution Chemistry 37, no. 11
(2008) : 1575-1591.
http://dx.doi.org/10.1007/s10953-008-9330-y---------- MLA ----------
Frank, G.A., Marconi, M.C., Corti, H.R.
"An alternate solution of the fluorescence recovery kinetics after spot-bleaching for measuring diffusion coefficients. 1. Theory and numerical analysis"
. Journal of Solution Chemistry, vol. 37, no. 11, 2008, pp. 1575-1591.
http://dx.doi.org/10.1007/s10953-008-9330-y---------- VANCOUVER ----------
Frank, G.A., Marconi, M.C., Corti, H.R. An alternate solution of the fluorescence recovery kinetics after spot-bleaching for measuring diffusion coefficients. 1. Theory and numerical analysis. J. Solut. Chem. 2008;37(11):1575-1591.
http://dx.doi.org/10.1007/s10953-008-9330-y