DNA Oxidative Cleavage Induced by the Novel Peptide Derivatives of 3-(quinoxalin-6-yl)alanine in Combination with Cu(II) or Fe(II) Ions

Table 2

UV-Vis spectroscopic parameters of Cu(II) complexes with DPQa-Gly, DFQa-Gly, and DPPZa-Gly at pH 7.4; ligand-to-metal molar ratio 2 : 1.

Cu(II)–DPQa-Gly		Cu(II)–DFQa-Gly		Cu(II)–DPPZa-Gly
𝜆 [nm]	𝜀 [M^−1cm^−1]	𝜆 [nm]	𝜀 [M^−1cm^−1]	𝜆 [nm]	𝜀 [M^−1cm^−1]
620	74	620	48	610	90