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

被引:27
作者
Garaudée, S
Elhabiri, M
Kalny, D
Robiolle, C
Trendel, JM
Hueber, R
Van Dorsselaer, A
Albrecht, P [1 ]
Albrecht-Gary, AM
机构
[1] Univ Strasbourg 1, Fac Chim, Lab Geochim Bioorgan, CNRS,UMR 7509, F-67000 Strasbourg, France
[2] Univ Strasbourg 1, Fac Chim, Lab Physicochim Bioinorgan, CNRS,UMR 7509, F-67000 Strasbourg, France
[3] ULP, ECPM, Lab Spectrometrie Masse Bioorgan, CNRS,UMR 7509, F-67200 Strasbourg, France
[4] ANDRA, F-92298 Chatenay Malabry, France
关键词
D O I
10.1039/b201929a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A fruitful combination of potentiometry, absorption spectrophotometry, ESMS and H-1 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 similar to 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.
引用
收藏
页码:944 / 945
页数:2
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