Počet záznamů: 1
Limitations of Electronic Energy Transfer in the Determination of Lipid Nanodomain Sizes
0369083 - UFCH-W 2012 RIV US eng J - Článek v odborném periodiku
Šachl, Radek - Humpolíčková, Jana - Štefl, Martin - Johansson, L. B. A. - Hof, Martin
Limitations of Electronic Energy Transfer in the Determination of Lipid Nanodomain Sizes.
Biophysical Journal. Roč. 101, č. 11 (2011), L60-L62 ISSN 0006-3495
Grant CEP: GA ČR GAP208/10/1090; GA ČR GAP208/10/0376
Výzkumný záměr: CEZ:AV0Z40400503
Klíčová slova: Foerster resonance energy transfer * nanodomains * Monte Carlo Setup
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 3.653, rok: 2011
Even though superresolution microscopy indicates that size of plasma membrane rafts is <20 nm, those structures have never been observed. Förster resonance energy transfer (FRET) is therefore still the most powerful optical method for characterization of such domains. In this letter we investigate relation between nanodomain affinity of a donor-acceptor (D/A) pair and the detectable nanodomain size/area. We show that probes with high affinity to the liquid-ordered (Lo) phase are required for detecting domain sizes of a few nanometers, and/or domains that occupy a few percent of the bilayer area. A combination of donors and acceptors that prefer different phases is the more favorable approach. For instance, a D/A pair with the distribution constant of donors KD = 5 and acceptors KA = 0.01 can resolve a broad spectrum of nanodomain sizes. On the other hand, currently available donors and acceptors that prefer the same phase, either the liquid-disordered (Ld) or Lo phase, are not so convenient for determining domain sizes <20 nm. Here the detection limits of FRET experiments employing several commonly used D/A pairs have been investigated.
Trvalý link: http://hdl.handle.net/11104/0203233