腺嘌呤核苷酸镁配合物形成的微量热研究。
Microcalorimetric studies on the formation of magnesium complexes of adenine nucleotides.
作者信息
Belaich J P, Sari J C
出版信息
Proc Natl Acad Sci U S A. 1969 Oct;64(2):763-70. doi: 10.1073/pnas.64.2.763.
Abstract
Values for the thermodynamic quantities (DeltaF, DeltaH, DeltaS) in reactions in which complexes of adenine nucleotides with magnesium ion (ATPMg(--), ADPMg(-), AMPMg) are formed have been obtained by a microcalorimetric technique by using an isothermic Calvet's apparatus. Experimental values measured at ionic strength mu = 0.2 indicate that complex formation reactions are driven by the entropic factor and that stability of complexes increases with length of the phosphate chain.
摘要
通过使用等温卡尔维特量热仪的微量热技术，已获得了腺嘌呤核苷酸与镁离子形成复合物（ATPMg(--)、ADPMg(-)、AMPMg）的反应中的热力学量（ΔF、ΔH、ΔS）值。在离子强度μ = 0.2时测得的实验值表明，复合物形成反应由熵因素驱动，且复合物的稳定性随磷酸链长度的增加而增加。
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