Pettit L D, Siddiqui K F
Biochem J. 1976 Oct 1;159(1):169-71. doi: 10.1042/bj1590169.
The formation constants of the complexes of adenyl-5'-yl imidodiphosphate with H+ Mg2+, Ca2+ and a number of bivalent transition-metal ions were measured potentionmetrically. The complexes are generally a little more stable than the analogous complexes of ATP. By measuring the formation constants at two temperatures, this increase in stability was shown to result from an increased enthalpy change on complex-formation.
通过电位滴定法测定了腺苷 - 5'-亚氨基二磷酸与H⁺、Mg²⁺、Ca²⁺以及多种二价过渡金属离子形成配合物的形成常数。这些配合物通常比ATP的类似配合物稍稳定一些。通过在两个温度下测量形成常数,结果表明这种稳定性的增加是由于配合物形成时焓变增加所致。