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2007•Acta Physico-Chimica SinicaRequires access

Study on Thermal Denaturation of Lysozyme by DSC

Fang Ying

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Abstract

The thermal denaturation of solid lysozyme and the effects of denaturants and their concentrations on denaturation of lysozyme in aqueous solutions were studied by differential scanning calorimetry (DSC). The results showed that both denaturation temperature and denaturation enthalpy of lysozyme decreased as the existence of water and the addition of urea and guanidine hydrochloride (GuHCl). In addition, denaturation temperature and denaturation enthalpy decreased as the concentrations of urea and GuHCl increased. As a denaturant, GuHCl is more effective than urea due to its added ability of electrostatic interaction.

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What this paper is about

The thermal denaturation of solid lysozyme and the effects of denaturants and their concentrations on denaturation of lysozyme in aqueous solutions were studied by differential scanning calorimetry (DSC). The results showed that both denaturation temperature and denaturation enthalpy of lysozyme decreased as the existence of water and the addition of urea and guanidine hydrochloride (GuHCl). In addition, denaturation temperature and denaturation enthalpy decreased as the concentrations of urea and GuHCl increased. As a denaturant, GuHCl is more effective than urea due to its added ability of electrostatic interaction.

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Available abstract

The thermal denaturation of solid lysozyme and the effects of denaturants and their concentrations on denaturation of lysozyme in aqueous solutions were studied by differential scanning calorimetry (DSC). The results showed that both denaturation temperature and denaturation enthalpy of lysozyme decreased as the existence of water and the addition of urea and guanidine hydrochloride (GuHCl). In addition, denaturation temperature and denaturation enthalpy decreased as the concentrations of urea and GuHCl increased. As a denaturant, GuHCl is more effective than urea due to its added ability of electrostatic interaction.

Key concepts: Lysozyme, Denaturation (fissile materials), Urea, Guanidine, Differential scanning calorimetry, Chemistry, Enthalpy, Hydrochloride

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