Allosteric effects in norbadione A. A clue for the accumulation process of 137Cs in mushrooms?
Fiche publication
Date publication
mai 2002
Journal
Chemical communications (Cambridge, England)
Auteurs
Membres identifiés du Cancéropôle Est :
Dr VAN DORSSELAER Alain, Dr ELHABIRI Mourad
Tous les auteurs :
Garaudée S, Elhabiri M, Kalny D, Robiolle C, Trendel JM, Hueber R, Van Dorsselaer A, Albrecht P, Albrecht-Gary AM
Lien Pubmed
Résumé
A fruitful combination of potentiometry, absorption spectrophotometry, ESMS and 1H NMR enabled the characterisation of two caesium complexes with norbadione A and the determination of the respective stability constants of a mononuclear and a dinuclear caesium complex at pH approximately 6; a preliminary study allowed the assignment of five protonation sites of this pigment; a positively cooperative binding of the second Cs+ cation was observed.
Mots clés
4-Butyrolactone, analogs & derivatives, Agaricales, metabolism, Cesium Radioisotopes, pharmacokinetics, Kinetics, Magnetic Resonance Spectroscopy, Mass Spectrometry, Phenylacetates, chemistry, Potentiometry
Référence
Chem. Commun. (Camb.). 2002 May;(9):944-5