Biopolymers and cell. 1986. Volume 2. № 2. 81 - 87
A. P. Baby, I. A. Bagaveev, A. A. Uminsky, G. N. Saenko
STABILITY OF COPPER (II) COMPLEXES WITH DENATURED DNA IN SOLUTIONS OF VARIOUS IONIC STRENGTH
Summary
Conditions necessary for the formation and stability of Cu(II) complexes with the denatured DNA (dDNA) in solutions of various ionic strength are studied by the electron spectroscopy method. A chelate nature of the spectroscopically registered Cu(II) — dDNA complex in which Cu(II) ions form a bond with nitrogen base and phosphate group of biopolymer is experimentally confirmed. The «true» and seeming stability constants of the formed complexes are calculated. The possible structure of Cu(II) — dDNA complexes is suggested.