| Literature DB >> 3106023 |
P Kask, P Piksarv, U Mets, M Pooga, E Lippmaa.
Abstract
A fluorescence correlation experiment for measurement of rotational diffusion in the nanosecond time scale is described. Using this method, the rotational diffusion coefficient of bovine carbonic anhydrase B labelled with tetramethylrhodamine isothiocyanate was estimated to be Dr = (1.14 +/- 0.15) X 10(7) s-1 at 22 degrees C. The experiment is based on a cw argon ion laser, a microfluorometer with local solution flow inside the sample cell, and two photon detectors. The fluorescence intensity autocorrelation function in the nanosecond time range is computed with the help of a time-to-amplitude converter and a multichannel pulse-amplitude analyser.Entities:
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Year: 1987 PMID: 3106023 DOI: 10.1007/bf00256359
Source DB: PubMed Journal: Eur Biophys J ISSN: 0175-7571 Impact factor: 1.733