Diffusion coefficient of 30S particle of ribosome in water

Value 18.3 μm^2/s Range: ±10 μm^2/s
Organism Bacteria Escherichia coli
Reference Dobitchin PD, Kirillov SV, Noskin VA, Peshin NN. Correlation between biological activity of 30 S subunits of Escherichia coli ribosomes and their conformation changes revealed by optical mixing spectroscopy. Biophys Chem. 1983 Mar17(2):165-9. p.166 right column bottom paragraphPubMed ID6340749
Method Spectral analysis of light scattered from solutions of 30 S subunits was performed by the method of regularization of the inverse spectral problem.
Comments Fig. 1 shows the dependence of the half-width of the spectrum (F) vs. sin^2?/2 for active (a) and inactivated (b) 30 S subunits. This dependence yieids for the active particles a diffusion constant D20,w=(1.83±0.10)x10^-7cm2/s and a hydrodynamical diameter 235±12Å.
Entered by Uri M
ID 107917