D-, electrophoretic mobility

The standard Rodbard-Ogston-Morris-Killander [326,327] model of electrophoresis which assumes that u alua = D nlDa is obtained only for special circumstances. See also Locke and Trinh [219] for further discussion of this relationship. With low electric fields the effective mobility equals the volume fraction. However, the dispersion coefficient reduces to the effective diffusion coefficient, as determined by Ryan et al. [337], which reduces to the volume fraction at low gel concentration but is not, in general, equal to the porosity for high gel concentrations. If no electrophoresis occurs, i.e., and Mp equal zero, the results reduce to the analysis of Nozad [264]. If the electrophoretic mobility is assumed to be much larger than the diffusion coefficients, the results reduce to that given by Locke and Carbonell [218]. 

St/iuctu/uit >cn o (vUon gcUmd eZactAopkoA,etic pAoca-duAe will aid In detecting an a chaln abnormality because such a variant will be present as two abnormal bands, one major abnormality (02 32) and one minor abnormality (02 62). The absence of the minor abnormality does not exclude an a-chaln abnormality since Its electrophoretic mobility may be similar to that of a known normal hemoglobin type. The electrophoretic pattern in a subject heterozygous for the 3 chaln abnormality Hb-S or Hb-D and for the 6-chain variant Hb-A2 resembles closely that of a person who Is heterozygous for a Hb-D that Is abnormal In the a-chaln. 

Grossman, P. D., Colburn, J. C., and Lauer, H. H., A semiempirical model for the electrophoretic mobilities of peptides in tree-solution capillary electrophoresis, Anal. Biochem., 179, 28, 1989. 

Electrophoretic mobility (m) is dehned as the particle s migration distance (d) in time t under the inhuence of unit electric held strength... 

The Dependencies of Radius of Gyration Rg, Static Correlation Length Hydrodynamic Screening Length Viscosity r, Self-Translational Diffusion Coefficient D, Cooperative Diffusion Coefficient Dc, Coupled Diffusion Coefficient Df, and Electrophoretic Mobility p on c and N for Various Regimes of Polyelectrolyte and Salt Concentrations... 

Figure 21 Intrinsic Electrophoretic Mobility Contributions to the Total Mobility, Ptotal, of Each Charged Form of the L-a-polypeptide 1 and Its retro-inverso D-a-Isomer 2, Computed According to the Derived Values of the Molar Fraction, %, of the Different Charged Forms Corresponding to the +4, +3, +2,...,-2 Species and Equations 55-59 (adapted from Hearn, Keah, Boysen, Cassiano, Messana, Rossetti, and Castagnola,1 171 with permission)...

Note e = electron charge NA = Avogadro s number z, = charge of ion of type Mt = molar concentration of ions in the bulk e = dielectric constant of the medium 4 = energy of attraction A = Hamaker constant d = distance between the surfaces 4 = energy of repulsion = ionic concentration (in number/volume) T0 1 17 = viscosity of the liquid u = electrophoretic mobility... 

Incubation of a cell-free extract of L. minor in the presence of NAD+ and UDP-D-[U-14C]glucuronic acid generated two compounds, each containing a different radioactive C5 sugar.96 The presence of apiose after hydrolysis was diagnosed by (a) paper chromatography, (b) specific complex-formation with benzeneboronic acid, (c) electrophoretic mobility, and (d) formation of its isopropylidene acetal. Treatment with ammonia at 0° showed that the compound was formed by a nonenzymic cyclization.96 Treatment with phosphoric diesterase plus phosphatase further supported an earlier report of the existence of a D-apiosyl cyclic phosphate.95... 

---