Thermodynamic analysis of proton- and urea-induced dissociation of tobacco mosaic virus: stoichiometry, common ion effect, cooperativity, heterogeneity of subunits and the effect of urea as a homogenizer
| Autor: | José Ailton Conceição Bispo, Carlos Francisco Sampaio Bonafe, A. L. Carvalho, Ernesto Acosta Martínez, Daniel Ferreira de Lima Neto |
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| Rok vydání: | 2020 |
| Předmět: |
Proton
Chemistry General Chemical Engineering Cooperativity 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Industrial and Manufacturing Engineering Dissociation (chemistry) 0104 chemical sciences Gibbs free energy Common-ion effect symbols.namesake chemistry.chemical_compound Extent of reaction Materials Chemistry symbols Urea Physical chemistry 0210 nano-technology Stoichiometry |
| Zdroj: | Chemical Papers. 74:2861-2874 |
| ISSN: | 1336-9075 2585-7290 |
| Popis: | The urea- and pressure-induced dissociation of tobacco mosaic virus (TMV) and proton involvement were investigated using a thermodynamic approach that considered the extent of reaction for protons and urea. The stoichiometry of these effectors was determined, as were the Gibbs free energy of dissociation (ΔGD), the volume change associated with dissociation (ΔV) and the Hill coefficient (H). At low pressure, the proton release ($$\mu_{{H^{ + } }}$$) was 1.9 and 1.4 mol H+/mol of TMV at pH 4.8 and 6.8, respectively. Below pH 4.5 and at pH 6.2, there was proton absorption ($$\mu_{{H^{ + } }}$$ |
| Databáze: | OpenAIRE |
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