Macrocyclization of the ATCUN Motif Controls Metal Binding and Catalysis
作者:Kosh P. Neupane、Amanda R. Aldous、Joshua A. Kritzer
DOI:10.1021/ic302820z
日期:2013.3.4
analogues of the amino-terminalcopper and nickelbinding (ATCUN) motif. These macrocycles have altered pH transitions for metal binding, and unlike linear ATCUNmotifs, the optimal cyclic peptide 1 binds Cu(II) selectively over Ni(II) at physiological pH. UV–vis and EPR spectroscopy showed that cyclic peptide 1 can coordinate Cu(II) or Ni(II) in a square planar geometry. Metal binding titration and ESI-MS