Abstract
Values for the thermodynamic quantities (ΔF, ΔH, ΔS) 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 μ = 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.
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- BURTON K. Formation constants for the complexes of adenosine di- or tri-phosphate with magnesium or calcium ions. Biochem J. 1959 Feb;71(2):388–395. doi: 10.1042/bj0710388. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Khan M. M., Martell A. E. Thermodynamic quantities associated with the interaction of adenosine triphosphate with metal ions. J Am Chem Soc. 1966 Feb 20;88(4):668–671. doi: 10.1021/ja00956a008. [DOI] [PubMed] [Google Scholar]
- O'SULLIVAN W. J., PERRIN D. D. THE STABILITY CONSTANTS OF METAL-ADENINE NUCLEOTIDE COMPLEXES. Biochemistry. 1964 Jan;3:18–26. doi: 10.1021/bi00889a005. [DOI] [PubMed] [Google Scholar]
- Phillips R. C., George P., Rutman R. J. Thermodynamic studies of the formation and ionization of the magnesium(II) complexes of ADP and ATP over the pH range 5 to 9. J Am Chem Soc. 1966 Jun 20;88(12):2631–2640. doi: 10.1021/ja00964a002. [DOI] [PubMed] [Google Scholar]
- Phillips R., Eisenberg P., George P., Rutman R. J. Thermodynamic data for the secondary phosphate ionizations of adenosine, guanosine, inosine, cytidine, and uridine nucleotides and triphosphate. J Biol Chem. 1965 Nov;240(11):4393–4397. [PubMed] [Google Scholar]