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Microcalorimetric Studies on the Formation of Magnesium Complexes of Adenine Nucleotides
J. P. Belaich and J. C. Sari
Proceedings of the National Academy of Sciences of the United States of America
Vol. 64, No. 2 (Oct. 15, 1969), pp. 763-770
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/59813
Page Count: 8
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Values for the thermodynamic quantities (Δ F, Δ H, Δ S) 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.
Proceedings of the National Academy of Sciences of the United States of America © 1969 National Academy of Sciences