Issue 9, 2002
From the journal:

Chemical Communications

Allosteric effects in norbadione A. A clue for the accumulation process of 137Cs in mushrooms?†

Sandrine Garaudée,a   Mourad Elhabiri,a   Daniel Kalny,a   Céline Robiolle,bd   Jean-Michel Trendel,b   Raymond Hueber,c   Alain Van Dorsselaer,c   Pierre Albrecht*b  and  Anne-Marie Albrecht-Gary*a  

* Corresponding authors

a Laboratoire de Physico-Chimie Bioinorganique, UMR 7509 du CNRS, Faculté de Chimie, Université Louis Pasteur (ULP), 67000 Strasbourg, France
E-mail: amalbre@chimie.u-strasbg.fr

b Laboratoire de Géochimie Bioorganique, UMR 7509 du CNRS, Faculté de Chimie, ULP, 67000 Strasbourg, France
E-mail: albrecht@chimie.u-strasbg.fr

c Laboratoire de Spectrométrie de Masse Bioorganique, UMR 7509 du CNRS, ECPM, ULP, 67200 Strasbourg, France
E-mail: vandors@chimie.u-strasbg.fr

d ANDRA, 92298 Châtenay-Malabry, France

Abstract

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 ∼ 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.

Graphical abstract: Allosteric effects in norbadione A. A clue for the accumulation process of 137Cs in mushrooms?

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Article information

DOI
https://doi.org/10.1039/B201929A
Article type
Communication
Submitted
22 Feb 2002
Accepted
18 Mar 2002
First published
02 Apr 2002

Chem. Commun., 2002, 944-945

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Allosteric effects in norbadione A. A clue for the accumulation process of 137Cs in mushrooms?

S. Garaudée, M. Elhabiri, D. Kalny, C. Robiolle, J. Trendel, R. Hueber, A. Van Dorsselaer, P. Albrecht and A. Albrecht-Gary, Chem. Commun., 2002, 944 DOI: 10.1039/B201929A

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