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Pulsed interleaved excitation: principles and applications.
MedLine Citation:
PMID:  23276541     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Pulsed interleaved excitation (PIE) is the methodology of interleaved or alternating excitation of different fluorophores on the nanosecond timescale, which allows quasi-simultaneous, yet independent measurements to be performed. PIE simplifies quantification of several fluorescence techniques such as FCCS and FRET experiments. Foremost, it allows to specifically filter out spectral emission bleedthrough (crosstalk) and direct excitation without a decrease in the signal-to-noise ratio (SNR) of the experiment. Next, PIE allows determination of the absolute FRET efficiency from FCCS experiments in the case of nonperfect labeling. In recent years, PIE has been utilized in many different advanced FFS techniques. Combining MFD with PIE allows highly accurate and species-specific spFRET analyses to be performed. The combination of scanning FFS techniques with PIE combines the best of both techniques and allows for false-positive free measurements of molecular interactions in vitro and in living cells. In succession, a comprehensive overview of the principle and versatility of the PIE technique is discussed, the theory for analysis with PIE is outlined by comparing CW- and PIE-FCCS and finally, some of the most important applications of the PIE technique in literature are reviewed.
Authors:
Jelle Hendrix; Don C Lamb
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Methods in enzymology     Volume:  518     ISSN:  1557-7988     ISO Abbreviation:  Meth. Enzymol.     Publication Date:  2013  
Date Detail:
Created Date:  2013-01-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0212271     Medline TA:  Methods Enzymol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  205-43     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Elsevier Inc. All rights reserved.
Affiliation:
Physical Chemistry, Department of Chemistry, Munich Center for Integrated Protein Science (CiPSM) and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Munich, Germany; Laboratory of Photochemistry and Spectroscopy, Department of Chemistry, University of Leuven, Celestijnenlaan, Leuven, Belgium.
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