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Förster Resonance Energy Transfer (FRET) between Heterogeneously Distributed Probes: Application to Lipid Nanodomains and Pores
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2012 (English)In: International Journal of Molecular Sciences, ISSN 1422-0067, E-ISSN 1422-0067, Vol. 13, no 12, 16141-16156 p.Article in journal (Refereed) Published
Abstract [en]

The formation of membrane heterogeneities, e.g., lipid domains and pores, leads to a redistribution of donor (D) and acceptor (A) molecules according to their affinity to the structures formed and the remaining bilayer. If such changes sufficiently influence the Förster resonance energy transfer (FRET) efficiency, these changes can be further analyzed in terms of nanodomain/pore size. This paper is a continuation of previous work on this theme. In particular, it is demonstrated how FRET experiments should be planned and how data should be analyzed in order to achieve the best possible resolution. The limiting resolution of domains and pores are discussed simultaneously, in order to enable direct comparison. It appears that choice of suitable donor/acceptor pairs is the most crucial step in the design of experiments. For instance, it is recommended to use DA pairs, which exhibit an increased affinity to pores (i.e., partition coefficients K(D,A) > 10) for the determination of pore sizes with radii comparable to the Förster radius R(0). On the other hand, donors and acceptors exhibiting a high affinity to different phases are better suited for the determination of domain sizes. The experimental setup where donors and acceptors are excluded from the domains/pores should be avoided.

Place, publisher, year, edition, pages
MDPI , 2012. Vol. 13, no 12, 16141-16156 p.
Keyword [en]
Formylacetic esters, Ozonolysis, Solid phase scavenging, Heterocycles
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-63342DOI: 10.3390/ijms131216141PubMedID: 23203189OAI: oai:DiVA.org:umu-63342DiVA: diva2:581779
Available from: 2013-01-02 Created: 2013-01-02 Last updated: 2017-12-06Bibliographically approved

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