[用重组动力学方法研究蛋白质中的自由基反应]
[Study of free radical reactions in proteins by a recombination-kinetic method].
作者信息
L'vov K M, Iskakov A A
出版信息
Biofizika. 1993 May-Jun;38(3):411-6.
In terms of the polychronous kinetics model there were obtained values of efficient activation energy (Eeff) for a slow reaction of the death of free macroradicals in UV-irradiated at 77K silk fibroin and tendons with 80 and 15% humidity. In silk fibroin Eeff equals 6 +/- 1 kkal.mole-1 at 313-413 K and 14 +/- 1 kkal.mole-1 at 413-453 K. In the tendons with 80% humidity at 193-233 K Eeff = 1 +/- 0.5 kkal.mole-1, and at 233-252 K Eeff = 2 +/- 0.5 kkal.mole-1. In the tendons with 15% humidity in the region of 313-373 K there is a distribution for Eeff from Emin = 0 kkal.mole-1 to Emax = 33 +/- 1 kkal.mole-1. At 373-413 K Eeff = 0.
根据多步动力学模型，得出了在77K下紫外线照射的湿度分别为80%和15%的丝素蛋白及肌腱中，自由大分子自由基缓慢死亡反应的有效活化能（Eeff）值。在丝素蛋白中，313 - 413K时Eeff等于6 ± 1千卡·摩尔⁻¹，413 - 453K时为14 ± 1千卡·摩尔⁻¹。在湿度为80%的肌腱中，193 - 233K时Eeff = 1 ± 0.5千卡·摩尔⁻¹，233 - 252K时Eeff = 2 ± 0.5千卡·摩尔⁻¹。在湿度为15%的肌腱中，313 - 373K范围内Eeff分布为从Emin = 0千卡·摩尔⁻¹到Emax = 33 ± 1千卡·摩尔⁻¹。在373 - 413K时Eeff = 0。
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