Structural, motional, and kinetic features of the Cu(II)-(L-His)2 complex in aqueous solution.
A careful analysis by 1H and 13C FT-NMR on the Cu(II) (L-histidine)2 complex was carried out which allows delineation of structure and dynamics in solution. A mixture of complexes was shown such that 24% of the Cu(II) (L-histidine)2 complex contains both histidines bound in the histaminelike way, while the remaining 76% contains one L-His molecule bound in the histaminelike way and the other L-His molecule bound in the glycinelike way. The motional correlation time and relevant features of the exchange process were also delineated.
D055598:Chemical Phenomena; D002621:Chemistry; D003300:Copper / Q000032:analysis*; D006639:Histidine / Q000032:analysis*; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy
D006639:Histidine; D003300:Copper