Atomic resolution structure of a succinimide intermediate in E.coli CheY.
Atomic resolution structure of a succinimide intermediate in E.coli CheY.
复制标题
大肠杆菌 CheY 中琥珀酰亚胺中间体的原子分辨率结构。
DOI:
10.1016/s0022-2836(02)00821-5
复制
发表时间:
2002
影响因子:
5.6
通讯作者:
Volz,Karl
中科院分区:
文献类型:
--
作者:
Simonovic,Miljan;Volz,Karl
Isomerization of aspartate to isoaspartate occurs spontaneously in proteins, causes changes in protein structures, and correlates positively with the aging processes of many organisms, including Alzheimer disease in humans. Aspartate isomerization proceeds through an unstable cyclic succinimide intermediate. There are few protein structure determinations that have characterized the intermediates and products of this isomerization reaction. Here we report the discovery of an unusually stabilized succinimide ring in the 1.1Å structure of the Escherichia coli CheY protein, as determined from a crystal eight years old. The ring is formed by the side-chain of aspartate 75 and the backbone nitrogen of glycine 76 in an exposed loop of the molecule. Stabilization of the succinimide is through interaction of a sulfate ion oxygen atom with the imide nitrogen atom. Formation of the ring caused conformational changes in the loop, but did not alter the overall structure of the protein.
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影响因子:
4.8
作者:
M. Simonović;K. Volz
通讯作者:
K. Volz
DOI:
10.1016/s0021-9258(18)92732-8
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Glen Teshima;J. T. Stults;V. Ling;E. Canova‐Davis
通讯作者:
E. Canova‐Davis
DOI:
10.1016/s0021-9258(18)54036-9
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
K. Toney;A. Bateman;C. Gagnon;H. Bennett
通讯作者:
H. Bennett
DOI:
10.1006/bbrc.1995.1989
发表时间:
1995
期刊:
Biochemical and biophysical research communications.
影响因子:
--
作者:
Paranandi,MV;Aswad,DW
通讯作者:
Aswad,DW
DOI:
10.1016/s0021-9258(18)83327-0
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Stephenson;S. Clarke
通讯作者:
S. Clarke