Nuclear spin catalysis in living nature

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• 作者：L. V. Avdeeva ; V. K. Koltover
• 刊名：Moscow University Chemistry Bulletin
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：71
• 期：3
• 页码：160-166
• 全文大小：649 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Chemistry
  Russian Library of Science
  
• 出版者：Allerton Press, Inc. distributed exclusively by Springer Science+Business Media LLC
• ISSN：1935-0260
• 卷排序：71

文摘

Experiments with cells enriched in stable magnesium isotopes, magnetic 25Mg or nonmagnetic 24Mg and 26Mg, are carried out. It is revealed that adaptation of bacteria E. coli to the growth media enriched in magnetic 25Mg proceeds faster as compared to the growth media enriched in nonmagnetic magnesium isotopes. In experiments with another commonly accepted cell model, S. cerevisiae yeast, it is revealed that the rate constant of postradiation recovery of the cells after UV irradiation is two times higher for cells enriched in 25Mg than for cells enriched in the nonmagnetic isotope. In collaboration with Ukrainian colleagues from the Palladin Institute of Biochemistry, the effects of different isotopes of magnesium on ATPase activity of myosin isolated from myometrium are studied. It is found that the rate of the enzymatic hydrolysis of ATP for 25Mg is 2.0–2.5 times higher as compared to nonmagnetic isotopes 24Mg and 26Mg. Some possible mechanisms of magnetic isotope effects (nuclear spin catalysis) in biological objects are discussed.Keywordsbiocatalysisnuclear spin catalysisstable isotopesmagnetic isotope effectreliability