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• W4302023712 endingPage "8176" @default.
• W4302023712 startingPage "8166" @default.
• W4302023712 abstract "MS2 bacteriophage is often used as a model for evaluating pathogenic viruses’ behavior in aqueous solution. However, the questions of the virus surface’s hydrophilic/hydrophobic balance, the charge distribution, and the binding mechanism are open. Using the dynamic light scattering method and laser Doppler electrophoresis, the hydrodynamic diameter and the ζ-potential of the virus particles were measured at their concentration of 5 × 1011 particles per mL and ionic strength 0.03 M. The values were found to be 30 nm and −29 or −34 mV (by Smoluchowski or Ohshima approximations), respectively. The MS2 bacteriophage surface was also investigated using a series of acid–base indicator dyes of various charge type, size, and structure. Their spectral and acid–base properties (pKa) are very sensitive to the microenvironment in aqueous solution, including containing nanoparticles. The electrostatic potential of the surface Ψ was estimated using the common formula: Ψ = 59 × (pKai – pKa) in mV at 25 °C. The Ψ values were −50 and +10 mV, respectively, which indicate the “mosaic” way of the charge distribution on the surface. These data are in good agreement with the obtained ζ-potential values and provide even more information about the virus surface. It was found that the surface of the MS2 virus is hydrophilic in solution in contrast to the commonly accepted hypothesis of the hydrophobicity of virus particles. No hydrophobic interactions between various molecular probes and the capsid were observed." @default.
• W4302023712 created "2022-10-06" @default.
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• W4302023712 date "2022-10-05" @default.
• W4302023712 modified "2023-10-17" @default.
• W4302023712 title "Estimation of Nanoparticle’s Surface Electrostatic Potential in Solution Using Acid–Base Molecular Probes. III. Experimental Hydrophobicity/Hydrophilicity and Charge Distribution of MS2 Virus Surface" @default.
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• W4302023712 doi "https://doi.org/10.1021/acs.jpcb.2c04491" @default.
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