title: [The effect of solvated ions on the thermal denaturation of human serum albumin in water-dimethylsulfoxide solutions].
abstract: The effects of solvated ions on the thermal denaturation of human serum albumin (HAS) in water-dimethylsulfoxide (DMSO) solutions were studied by the method of electron absorption spectroscopy. It was shown that depending on the DMSO concentration, electrolytes (LiCl, LiNO3, LiClO4, NaCl, and NaNO3) contained in these solutions were characterized by different anion and cation solvation degrees: unlike cations, anions were only negligibly solvated, which affected HAS thermal denaturation. Electrostatic interactions between anions and positively charged amino acid residues supporting protein denaturation subsided in the line Cl- > NO3- > ClO4-.
authors.affiliation: Armenian State University, Yerevan, Armenia. kara@ysu.am
authors.forename: K R
authors.initials: KR
authors.lastname: Grigorian
authors.forename: A A
authors.initials: AA
authors.lastname: Shiladzhian
mesh_terms: D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D006358:Hot Temperature; D006801:Humans; D007477:Ions / Q000737:chemistry; D018020:Lithium Compounds / Q000737:chemistry*; D009566:Nitrates / Q000737:chemistry*; D011489:Protein Denaturation; D012709:Serum Albumin / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry
chemical_list: D007477:Ions; D018020:Lithium Compounds; D009566:Nitrates; D012709:Serum Albumin; D012996:Solutions; D012965:Sodium Chloride; C031618:sodium nitrate; D004121:Dimethyl Sulfoxide