Translate this page to:
In JoVE (1)
- In vivo Kvantifiering av G Tillsammans Interaktioner protein receptor med spektralt korrigerats inom två-photon Mikroskopi
Other Publications (1)
This translation into Swedish was automatically generated.
English Version | Other Languages
Articles by Deo Singh in JoVE
In vivo Kvantifiering av G Tillsammans Interaktioner protein receptor med spektralt korrigerats inom två-photon Mikroskopi
Michael Stoneman1, Deo Singh1, Valerica Raicu1,2
1Department of Physics, University of Wisconsin - Milwaukee, 2Department of Biological Sciences, University of Wisconsin - Milwaukee
Genom att använda ett spektralt löst två-photon-systemet mikroskopi avbildning, är pixelnivå kartor över Förster Resonance Energy Transfer (FRET) effektivitetsvinster för celler som uttrycker membranreceptorer hypoteser för att bilda homo-oligomeric komplex. Från FRET effektivitet kartor, kan vi uppskatta stökiometriska information om oligomer komplex under utredning.
Other articles by Deo Singh on PubMed
Comparison Between Whole Distribution- and Average-based Approaches to the Determination of Fluorescence Resonance Energy Transfer Efficiency in Ensembles of Proteins in Living Cells
Biophysical Journal. May, 2010 | Pubmed ID: 20483320
Current methods for analysis of data from studies of protein-protein interactions using fluorescence resonance energy transfer (FRET) emerged from several decades of research using wide-field microscopes and spectrofluorometers to measure fluorescence from individual cells or cell populations. Inherent to most measurements is an averaging of the distributions of FRET efficiencies over large populations of protein complexes, which washes out information regarding the stoichiometry and structure of protein complexes. Although the introduction of laser-scanning microscopes in principle could facilitate quantification of the distributions of FRET efficiencies in live cells, only comparatively recently did this potential fully materialize, through development of spectral- or lifetime-based approaches. To exploit this new opportunity in molecular imaging, it is necessary to further develop theoretical models and methods of data analysis. Using Monte Carlo simulations, we investigated FRET in homogenous and inhomogeneous spatial distributions of molecules. Our results indicate that an analysis based on distributions of FRET efficiencies presents significant advantages over the average-based approach, which include allowing for proper identification of biologically relevant FRET. This study provides insights into the effect of molecular crowding on FRET, and it offers a basis for information extraction from distributions of FRET efficiencies using simulations-based data fitting.