113Cd nmr study of the metal cluster structure of human liver metallothionein.
113Cd nmr study of the metal cluster structure of human liver metallothionein.
复制标题
113Cd nmr 研究人肝脏金属硫蛋白的金属簇结构。
DOI:
10.1016/s0162-0134(00)80083-5
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发表时间:
1982
影响因子:
3.9
通讯作者:
Armitage,IM
中科院分区:
文献类型:
--
作者:
Boulanger,Y;Armitage,IM
Cadmium-113 nuclear magnetic resonance (113Cd nmr) was used to elucidate the structural properties of the cadmium binding sites in human liver metallothionein. The isotopically labeled113Cd-metallothionein was prepared by the in vitro exchange of the native metals (greater than 94% zinc) for113CdCl2during isolation. The two isoproteins, MT-1 and MT-2, showed113Cd nmr resonances in the chemical shift range 610–670 ppm. The multiplet structure of the resonances is due to two bond scalar interactions between adjacent113Cd ions linked by cysteine thiolate ligands. Homonuclear113Cd decoupling experiments allowed the determination of the metal cluster structure, which, similar to the rabbit liver metallothionein, consists of a four- and a three-metal cluster designated cluster A and cluster B, respectively. Chemical shift similarities in the113Cd nmr spectra of the human, rabbit and calf liver MT-1 and MT-2 are observed, especially for cluster A. Small variations in chemical shifts are explained in terms of differences in the primary structure between the two human isoproteins.
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影响因子:
15
作者:
J. Otvos;I. Armitage
通讯作者:
I. Armitage
DOI:
10.1042/bj1570517
发表时间:
1976
期刊:
The Biochemical journal
影响因子:
--
作者:
I. Bremner;B. Young
通讯作者:
B. Young
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Briggs,RW;Armitage,IM
通讯作者:
Armitage,IM
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Otvos,JD;Olafson,RW;Armitage,IM
通讯作者:
Armitage,IM
DOI:
10.1042/bj1910475
发表时间:
1980
期刊:
The Biochemical journal
影响因子:
--
作者:
D. Minkel;K. Poulsen;S. Wielgus;C. Shaw;D. Petering
通讯作者:
D. Petering