Biology – Quantitative Biology – Subcellular Processes
Scientific paper
2007-02-22
Chem. Phys. Lett. 432, 371-374 (2006)
Biology
Quantitative Biology
Subcellular Processes
Scientific paper
10.1016/j.cplett.2006.10.060
The question of how to validate and interpret correctly the waiting time probability density functions (WT-PDFs) from single molecule data is addressed. It is shown by simulation that when a stretched exponential WT-PDF, with a stretched exponent alfa and a time scale parameter tau, generates the off periods of a two-state trajectory, a reliable recovery of the input WT-PDF from the trajectory is obtained even when the bin size used to define the trajectory, dt, is much larger than the parameter tau. This holds true as long as the first moment of the WT-PDF is much larger than dt. Our results validate the results in an earlier study of the activity of single Lipase B molecules and disprove recent related critique.
de Schryver Frans C.
Flomenbom Ophir
Hofkens Johan
Klafter Joseph
Nolte Roeland J. M.
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