Co-ordination ability of Cu(2+) ion toward the nucleobase-amino acid willardiine.
The complex formation between Cu(II) and dl-willardiine [1-(2-amino-2-carboxyethyl)uracil], an analog of phenylalanine containing the uracil residue, was investigated by potentiometric and spectral studies. The results indicate that the primary metal binding site of the ligand is the alpha-amino-carboxylate chelating set. The uracil moiety, however, can coordinate the metal ion in basic solution giving rise to intermolecular bridging.
Chruscinska
E
E
Institute of General Food Chemistry, Technical University of Lodz, Stefanowski Street 4/10, 90-924 Lodz, Poland.
Garribba
E
E
Micera
G
G
Panzanelli
A
A
Biagioli
M
M