Stepwise formation of alpha-helices during cytochrome c folding.
Stepwise formation of alpha-helices during cytochrome c folding.
复制标题
细胞色素 c 折叠过程中逐步形成 α 螺旋。
DOI:
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
I. Morishima
中科院分区:
文献类型:
--
作者:
S. Akiyama;Satoshi Takahashi;K. Ishimori;I. Morishima
Two models have been proposed to describe the folding pathways of proteins. The framework model assumes the initial formation of the secondary structures whereas the hydrophobic collapse model supposes their formation after the collapse of backbone structures. To differentiate between these models for real proteins, we have developed a novel CD spectrometer that enables us to observe the submillisecond time frame of protein folding and have characterized the timing of secondary structure formation in the folding process of cytochrome c (cyt c). We found that approximately 20% of the native helical content was organized in the first phase of folding, which is completed within milliseconds. Furthermore, we suggest the presence of a second intermediate, which has alpha-helical content resembling that of the molten globule state. Our results indicate that many of the alpha-helices are organized after collapse in the folding mechanism of cyt c.
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影响因子:
2.9
作者:
Marmorino,JL;Pielak,GJ
通讯作者:
Pielak,GJ
影响因子:
13.8
作者:
Baldwin, RL;Rose, GD
通讯作者:
Rose, GD
DOI:
10.1073/pnas.94.5.1779
发表时间:
1997-03-04
影响因子:
11.1
作者:
Chan, CK;Hu, Y;Hofrichter, J
通讯作者:
Hofrichter, J
影响因子:
13.8
作者:
Baldwin, RL;Rose, GD
通讯作者:
Rose, GD
影响因子:
56.9
作者:
JENNINGS, PA;WRIGHT, PE
通讯作者:
WRIGHT, PE