Comparison of Structure and Dynamics of Micelle-bound Human α-Synuclein and Parkinson Disease Variants*
Comparison of Structure and Dynamics of Micelle-bound Human α-Synuclein and Parkinson Disease Variants*
复制标题
胶束结合的人类 α-突触核蛋白和帕金森病变体的结构和动力学比较*
DOI:
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发表时间:
2005
影响因子:
4.8
通讯作者:
A. Bax
中科院分区:
文献类型:
--
作者:
T. Ulmer;A. Bax
Three point mutations (A30P, E46K, and A53T) as well as gene triplication genetically link the 140-residue protein α-synuclein (aS) to the development of Parkinson disease. Here, the structure and dynamics of micelle-bound aS(A30P) and aS(A53T) are described and compared with wild-type aS, in addition to describing the aS-micelle interaction. A53T is sensed only by directly adjacent residues and leaves the backbone structure and dynamics indistinguishable from the wild type. A30P interrupts one helix turn (Val26–Ala29) and destabilizes the preceding one. A shift in helix register following A30P disturbs the canonical succession of polar and hydrophobic residues for at least two turns. The shortened helix-N adopts a slightly higher helical content and is less bent, indicating that strain was present in the micelle-bound helix. In the vicinity of the A30P-induced perturbations, the underlying micelle environment has rearranged, but nevertheless all aS variants maintain similar interrelationships with the micelle. Moreover, aS-micelle immersion correlates well with fast and slow aS backbone dynamics, allowing a rare insight into protein-micelle interplay.
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影响因子:
2.9
作者:
Narayanan, V;Scarlata, S
通讯作者:
Scarlata, S
影响因子:
15
作者:
Grishaev, A;Bax, A
通讯作者:
Bax, A
影响因子:
2.2
作者:
Schwieters, CD;Kuszewski, JJ;Clore, GM
通讯作者:
Clore, GM
影响因子:
15
作者:
Ulmer, TS;Ramirez, BE;Bax, A
通讯作者:
Bax, A
影响因子:
2.2
作者:
Kuszewski, J;Clore, GM
通讯作者:
Clore, GM