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Inne
Formation equilibria of nickel complexes with glycyl-histidyl-lysine and two synthetic analogues.
Autorzy
Rok wydania
2004
Czasopismo
Journal of Inorganic Biochemistry
Numer woluminu
98
Strony
153-160
DOI
10.1016/j.jinorgbio.2003.09.010
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Complex-formation equilibria between the Ni(II) ion and the natural tripeptide glycyl-l-histidyl-l-lysine have been investigated. Two synthetic analogues, where the histidine residue has been substituted with l-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridine-6-carboxylic acid (l-Spinacine) and l-1,2,3,4-tetrahydro-isoquinolin-3-carboxylic acid (Tic), respectively, have been considered, as well. Different experimental techniques have been employed: potentiometry, calorimetry, visible spectrophotometry and CD spectroscopy. Structural hypotheses on the main complex species are suggested. Evidences on the formation of tetrameric species with the first ligand are shown. No involvement of the side-chain amino group of lysine residue in metal ion coordination was found.
Słowa kluczowe
Nickel complexes, Glycyl-hystidyl-lysine, l-4, photoluminescence, structure elucidation, 7-tetrahydro-1H-imidazo[4, 5-c]pyridine-6-carboxylic acid, l-Spinacine, l-1, molecule, Ion, 4-tetrahydro-isoquinolin-3-carboxylic acid, Solution equilibria
Adres publiczny
https://doi.org/10.1016/j.jinorgbio.2003.09.010
Strona internetowa wydawcy
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