Possible Interaction: Cupric Cation and Cuprous

“Furthermore, sequences with His 1 and His 2 , thus, non-saturating the Cu(II) coordination sphere, are redox-active and may play a role in Cu(II) reduction to Cu(I).”

“Furthermore, sequences with His1 and His2, thus, non‐saturating the Cu(II) coordination sphere, are redox‐active and may play a role in Cu(II) reduction to Cu(I).”

“However, excess Cu(II) could enhance the formation of precipitates containing Cu(I) , Ag and S. Our results indicate that at the ambient temperature and in the dark Cu(I) can promote the dissolution of Ag2S and act as a precipitating agent.”

“Finally, colorimetric and scavenger experiments indicate that the generation of Cu(I) , H2O2, and superoxide contributes to the production of DNA frank strand breaks by the Cu(II) complex of 4.”

“The synergistic effect of Cu(II) and Cu(I) is the essential part in the reaction mechanism.”

“Our results indicate that Cu+ and Cu2+ isotherms exhibit a redox potential-dependent intersection point.”

“Because experiments indicate different coordination environments for Cu(II) and Cu(I) , it is expected that the electron is not transferred between Cu-Aβ and reactants in a straightforward manner but involves structural rearrangement.”

“mb-SB2 shows some significant similarities to mb-OB3b, including its spectral and metal binding properties, and its ability to bind and reduce Cu(II ) to Cu(I).”

“During the oxidative DNA-damaging process, catechols but not carbonyl catechols were oxidized to o-quinone; however, coexisting Cu(II) was reduced to Cu(I).”

“Kinetically, a unique dissymmetry between the Cu(I) and Cu(II) ligand exchange capacity is highlighted.”

“This was documented by determination of the Cu(I) and Cu(II) binding affinities in the …) M and K(D)(Cu(II)) = 3 x 10(-12) M, that is, binding of Cu(II) … Cu(I) by a factor of approximately 10(2) … a factor of at least 10(6).”