A kinetic examination of penicillin acylase stability in water-organic solvent systems at different temperatures

被引:17
作者
Arroyo, M [1 ]
Torres-Guzmán, R [1 ]
De la Mata, I [1 ]
Castillón, MP [1 ]
Acebal, C [1 ]
机构
[1] Univ Complutense Madrid, Fac Ciencias Biol, Dept Bioquim & Biol Mol 1, Madrid, Spain
关键词
penicillin acylase; Streptomyces lavendulae; organic solvents; monophasic systems; enzyme stability;
D O I
10.1080/10242420210158
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We have studied the thermal stability of penicillin acylase from Streptomyces lavendulae in water-organic solvent monophasic systems at the range of temperatures between 40 and 60degreesC. We found a linear correlation between the log P value of the solvent and the activation free energy for denaturation (DeltaG(d)) at all temperatures tested. Thermodynamic analysis of the results indicates that solvents with log P less than or equal to -2.3 have protective effects, whereas solvents with log P greater than or equal to -1.8 are deleterious for penicillin acylase.
引用
收藏
页码:53 / 56
页数:4
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