Metal binding to pyridoxal derivatives. An NMR study of the interaction of Eu(III) with pyridoxal phosphate and pyridoxamine phosphate.
J Biosci
;
1979 Mar; 1(1): 35-47
Artigo
em Inglês
| IMSEAR
| ID: sea-159922
ABSTRACT
The solution conformations of pyridoxal-5'-phosphate and pyridoxamine- 5'-phosphate have been investigated using Eu(III) as a nuclear magnetic resonance shift probe. Binding of Eu(III) to pyridoxal phosphate results in the formation of two complexes, at the phosphate group and the o-hydroxy-aldehyde moiety, which are in slow exchange on the nuclear magnetic resonance time-scale. The lanthanide-induced pseudo contact shifts calculated using the McConnell-Robertson equation (J. Chem. Soc. (1950), 22, 1561) are in good agreement with the experimentally observed values for both pyridoxal phosphate and pyridoxamine phosphate and lead to a family of closely related conformations.
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Índice:
IMSEAR (Sudeste Asiático)
Idioma:
Inglês
Revista:
J Biosci
Ano de publicação:
1979
Tipo de documento:
Artigo
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