NMR investigation of the copper(II)-carnosine complex in water solution |
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| Authors: | E Gaggelli R Basosi R Pogni G Valensin |
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| Institution: | Department of Chemistry, University of Siena, Italy. |
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| Abstract: | The predominant species in water solution of excess carnosine and Cu2+ ions was characterized by measuring 13C and 1H spin-lattice and spin-spin relaxation rates. Four peptide molecules were calculated to be coordinated to the metal through the imidazole nitrogen. Evaluation of ion-proton distances demonstrated that metal complexation does not involve severe changes in conformation of the peptide. |
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