The partial molar heat capacities and volumes of some N-acetyl amino acid amides in aqueous solution over the temperature range 288.15 to 328.15 K

被引:38
作者
Hakin, AW [1 ]
Hedwig, GR
机构
[1] Univ Lethbridge, Dept Chem & Biochem, Lethbridge, AB T1K 3M4, Canada
[2] Massey Univ, Inst Fundamental Sci Chem, Palmerston North, New Zealand
关键词
D O I
10.1039/a910296p
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The partial molar heat capacities, C-p,2(0), and partial molar volumes, V-2(0), at infinite dilution have been determined for the compounds N-acetylvalinamide and N-acetylleucinamide in aqueous solution at the temperatures 288.15, 298.15, 313.15 and 328.15 K and for N-acetylglycinamide and N-acetylalaninamide at the temperatures 288.15, 313.15 and 328.15 K. Partial molar volumes at infinite dilution have also been determined for the sparingly soluble N-acetylisoleucinamide in aqueous solution over the same temperature range. The C-p,2(0) and V-2(0) results have been used to calculate amino acid side-chain contributions to the thermodynamic properties. These side-chain contributions are critically compared with those obtained using other model compounds.
引用
收藏
页码:1795 / 1802
页数:8
相关论文
共 45 条
[23]   Partial volumes and compressibilities of extended polypeptide chains in aqueous solution: Additivity scheme and implication of protein unfolding at normal and high pressure [J].
Kharakoz, DP .
BIOCHEMISTRY, 1997, 36 (33) :10276-10285
[24]   Partial molar volumes and isentropic compressibilities of N-acetyl amino acid amides in dilute aqueous solutions at (5, 15, 25, 35, and 45) degrees C [J].
Kikuchi, M ;
Sakurai, M ;
Nitta, K .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1996, 41 (06) :1439-1445
[25]   PARTIAL MOLAR VOLUMES AND ADIABATIC COMPRESSIBILITIES OF AMINO-ACIDS IN DILUTE AQUEOUS-SOLUTIONS AT 5, 15, 25, 35, AND 45-DEGREES-C [J].
KIKUCHI, M ;
SAKURAI, M ;
NITTA, K .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1995, 40 (04) :935-942
[26]   AQUEOUS-SOLUTIONS CONTAINING AMINO-ACIDS AND PEPTIDES .20. VOLUMETRIC BEHAVIOR OF SOME TERMINALLY SUBSTITUTED AMINO-ACIDS AND PEPTIDES AT 298.15 K [J].
LESLIE, TE ;
LILLEY, TH .
BIOPOLYMERS, 1985, 24 (04) :695-710
[27]   Partial molar volumes and adiabatic compressibilities of a series of aliphatic amino acids and oligoglycines in D2O [J].
Likhodi, O ;
Chalikian, TV .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (06) :1156-1163
[28]  
LILLEY TH, 1985, CHEM BIOCH AMINO ACI, pCH21
[29]   Heat capacities of protein functional groups [J].
Makhatadze, GI ;
Lopez, MM ;
Privalov, PL .
BIOPHYSICAL CHEMISTRY, 1997, 64 (1-3) :93-101
[30]   HEAT-CAPACITY OF PROTEINS .1. PARTIAL MOLAR HEAT-CAPACITY OF INDIVIDUAL AMINO-ACID-RESIDUES IN AQUEOUS-SOLUTION - HYDRATION EFFECT [J].
MAKHATADZE, GI ;
PRIVALOV, PL .
JOURNAL OF MOLECULAR BIOLOGY, 1990, 213 (02) :375-384