Quasi-Elastic Light Scattering from Muscle F-Actin

概要

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Photon cotmnting autocorrelation functions of light scattered from solutionsof mtmscle F-actin were tvreasured by v?se of Q 128 channel dxgital correlator.Measured correlation functions slroxx'ed highly non exponential decay, which cancemainly fromm the existence of verb' slow decay components, much slower than l s '.These slow decay componexats were observed not to prodtmce the occupationntumber fituctuation. The average decay rate, F, dispersion, p./F', and skewness,p./F', obtained by tlte cutttulant e>cpansion ntethod were strongly dependent onthe channel width of the correlator, and on the position in, and preparation ofthe solution. These results were discussed in relation to the existcnce of aggregates andexponential length distribution of' actin filanrents. It was shown that, in highlypolydisperse samples, correlation functions should be mtteasured at variotus channelwidths, and that apparent non re?>rodt?cibi]ity of the results could be avoided byplotting the paran'ceters against the mean countung rate.
社団法人日本物理学会の論文
1977-06-15