The<scp>L</scp>-proline residue as a ‘break-point’ in the co-ordination of metal–peptide systems
作者:Michel Bataille、Grazyna Formicka-Kozlowska、Henryk Kozlowski、Leslie D. Pettit、Ian Steel
DOI:10.1039/c39840000231
日期:——
The L-proline residue in oligopeptides has been shown to act as a ‘break-point’ in their co-ordination to copper(II) ions leading to the formation of large chelate rings with the peptide locked in the β-conformation.
DNA damage induced by sulfite autoxidation catalyzed by copper(<scp>ii</scp>) tetraglycine complexes
作者:Ruben G. M. Moreno、María V. Alipázaga、Marisa H. G. Medeiros、Nina Coichev
DOI:10.1039/b416299d
日期:——
Copper(II)/(III) tetraglycine complexes were investigated for their ability to catalyze the autoxidation of sulfite resulting in oxidative DNA damage. The focus of this work is on DNA damage by Cu(III) and oxysulfur radicals formed by the oxidation of S(IV) oxides by dissolved oxygen in the presence of Cu(II) tetraglycine complexes. The results suggest that sulfite is rapidly oxidized by oxygen in