Effects of Imidazole and Its Derivatives on Radiation-Induced Dephosphorylation of Glycero-1-Phosphate in Deaerated Aqueous Solutions
作者:S. D. Brinkevich、A. Ya. Maliborskii、M. E. Melnichuk、R. L. Sverdlov、Yu. V. Grigor’ev、O. I. Shadyro
DOI:10.1134/s0018143921020053
日期:2021.3
effect of imidazole, histamine, histidine, and their nitro derivatives on the radiation-induced transformations of glycero-1-phosphate and ethanol in deaerated aqueoussolutions at pH 7 has been studied It has been found that the test substances in equimolar concentrations to glycero-1-phosphate inhibit the radiation-induced dephosphorylation by scavenging the radical products of water radiolysis. At
摘要 研究了咪唑,组胺,组氨酸及其硝基衍生物对pH 7的脱气水溶液中1-磷酸甘油酯和乙醇的辐射诱导转化的影响。已发现等摩尔浓度的测试物质对甘油的影响-1-磷酸盐通过清除水辐射分解的自由基产物来抑制辐射诱导的去磷酸化作用。在添加剂与底物的比例为1:100时,组氨酸和甲硝唑的硝基衍生物可有效抑制辐射诱导的1-磷酸甘油的去磷酸化,这是由于其与以碳为中心的自由基之间的相互作用(常数为(3.1-5.1) )×10 9 L摩尔–1 s –1。使用1 M的乙醇水溶液进行辐射分解,结果表明5-硝基咪唑可定量氧化α-羟乙基。与对照实验相比,这种现象表现为在放射分解产物中不存在2,3-丁二醇,乙醛的产率提高了约20倍。因此,甲硝唑和组氨酸的硝基衍生物由于其α-羟基含碳中心自由基的氧化而能够抑制1-磷酸甘油以及可能的甘油磷脂的辐射诱导的去磷酸化。