Dissociation Constants of Protolytic Dissociation of Glutamyl-Glutamic and Glycyl-Glutamic Acids in Aqueous Solution at 298 K

被引：5
|
作者：
Badelin, V. G. [1 ]
Barannikov, V. P. [2 ]
Katrovtseva, A. V. [1 ]
Tarasova, G. N. [1 ]
机构：
[1] Russian Acad Sci, Inst Solut Chem, Ivanovo 153045, Russia
[2] Ivanovo State Univ Chem Technol, Ivanovo, Russia
来源：
RUSSIAN JOURNAL OF GENERAL CHEMISTRY | 2013年 / 83卷 / 05期
关键词：
Dissociation Constant; Dipeptide; Carboxy Group; Glycyl; Potentiometric Titration Curve;
D O I：
10.1134/S1070363213050113
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Protolytic dissociation constants of stepwise dissociation of glutamyl-glutamic and glycyl-glutamic acids in aqueous solutions at 298.15 K at ionic strengths of 0.1, 0.5, and 1.0 M on the NaCl background were measured by potentiometric titration. The thermodynamic dissociation constants were calculated. Using the obtained and published data, we discuss the effect of additional carboxy groups in the side chains of the molecule on the protolytic dissociation constants of peptides.
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页码：945 / 948
页数：4
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