Evidence for non‐isostructural replacement of Zn2+ with Cd2+ in the β‐domain of brain‐specific metallothionein‐3
Evidence for non‐isostructural replacement of Zn2+ with Cd2+ in the β‐domain of brain‐specific metallothionein‐3
复制标题
在脑特异性金属硫蛋白-3 的 β 结构域中用 Cd2+ 非同构替代 Zn2+ 的证据
DOI:
10.1016/s0014-5793(02)03169-1
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发表时间:
2002
期刊:
影响因子:
3.5
通讯作者:
R. Sillard
中科院分区:
文献类型:
--
作者:
P. Palumaa;Olga Njunkova;Lesja Pokras;E. Eriste;H. Jörnvall;R. Sillard
Metallothionein-3 (MT-3) is a brain-specific MT, which is downregulated in Alzheimer’s disease. The N-terminal region of CdMT-3 is highly dynamic and has escaped structural characterization by nuclear magnetic resonance. We have used electrospray ionization mass spectrometry to probe conformational states of cadmium- and zinc-substituted metalloforms of MT-3 and can demonstrate that the N-terminal β-domain of MT-3 filled with Cd2+has a more open conformation than that filled with Zn2+. The results suggest that the larger Cd2+ions cannot isostructurally replace zinc in the β-domain of MT-3 whereas in the case of MT-1 and MT-2 the replacement is isostructural. Specific metal binding properties of the β-domain of MT-3 may be essential for fulfilling the specific role of MT-3 in the brain.
DOI:
10.1073/pnas.89.21.10124
发表时间:
1992-11-01
影响因子:
11.1
作者:
BRAUN, W;VASAK, M;WUTHRICH, K
通讯作者:
WUTHRICH, K
DOI:
10.1073/pnas.89.14.6333
发表时间:
1992-07-15
影响因子:
11.1
作者:
PALMITER, RD;FINDLEY, SD;DURNAM, DM
通讯作者:
DURNAM, DM
影响因子:
2.9
作者:
QUAIFE, CJ;FINDLEY, SD;PALMITER, RD
通讯作者:
PALMITER, RD