Nature of the fast and slow refolding reactions of iron(III) cytochrome c.

Nature of the fast and slow refolding reactions of iron(III) cytochrome c.
复制标题

铁(III)细胞色素c的快速和慢速重折叠反应的性质。

DOI:
10.1021/bi00509a033
复制
发表时间:
1981
期刊:
影响因子:
2.9
通讯作者:
Labhardt,AM
Labhardt,AM
中科院分区:
生物学3区
文献类型:
--
作者:
Ridge,JA;Baldwin,RL;Labhardt,AM

文献摘要

参考文献

被引文献

相似文献

John A. Ridge,* Robert L. Baldwin,* and Alexander M. Labhardt摘要:先前由Ikai et al.(Ikai, A., Fish, W. W. & Tanford, c .(1973) J. Mol. Biol.73, 165-184)研究的铁(III)细胞色素c (Fe (III) cyt c)的快速和缓慢重折叠反应已被重新研究。在这些条件下(pH 7.2, 25 C, 1.75 M盐酸胍),快速反应的振幅最大(78%),比慢反应快100倍。我们发现原生细胞c是快速反应和缓慢反应的产物。两种探针被用来测试天然cyt - c的形成:695 nm波段的吸光度和l-抗坏血酸的还原率。不同的未折叠物种(UF, Us)会引起快速和缓慢的重折叠反应,这可以通过展开后不同时间的重折叠实验(“双跳”实验)和天然cyt c的形成(细胞色素c (cyt c) 1是第一个系统研究的主题,用现代术语来说,蛋白质折叠转变的动力学。在发现可逆展开和再折叠的条件后,Ikai等人(1973)根据Ikai & Tanford(1973)的理论分析了动力学,该理论假设只有一种形式的未折叠蛋白质存在。他们的结论是
John A. Ridge,* Robert L. Baldwin,* and Alexander M. Labhardt abstract: The fast and slow refolding reactions of iron (III) cytochrome c (Fe (III) cyt c), previously studied by Ikai et al.(Ikai, A., Fish, W. W „& Tanford, C.(1973) J. Mol. Biol.73, 165-184), have been reinvestigated. The fast reaction has the major amplitude (78%) and is 100-fold faster than the slow reaction in these conditions (pH 7.2, 25 C, 1.75 M guanidine hydrochloride). We showhere that native cyt c is the product formed in the fast reaction as well as in the slow reaction. Two probes have been used to test for formation of native cyt c: absorbance in the 695-nm band and rate of reduction by l-ascorbate. Different unfolded species (UF, Us) give rise to the fast and slow refolding reactions, as shown both by re-folding assays at different times after unfolding (“double-jump” experiments) and by the formation of native cyt c in (Cytochrome c (cyt c) 1 was the subject of the first systematic study, in modern terms, of the kinetics of a protein folding transition. After finding conditions for reversible unfolding and refolding, Ikai et al.(1973) analyzed the kinetics by the theory of Ikai & Tanford (1973), which assumes that only one form of the unfoldedprotein is present. They concluded that
DOI: 10.1016/0022-2836(81)90342-9
发表时间: 1981-01-01
影响因子: 5.6
作者:
LEVITT, M
通讯作者: LEVITT, M
使用尿素梯度电泳研究蛋白质解折叠和重折叠的动力学。
DOI: --
发表时间: 1980
影响因子: 5.6
作者:
T. Creighton
通讯作者: T. Creighton
通过色氨酸 59 到血红素基团的能量转移来测量铁细胞色素 c 链折叠。
DOI: --
发表时间: 1976
期刊: Biochemistry
影响因子: 2.9
作者:
T. Tsong
通讯作者: T. Tsong
DOI: --
发表时间: 1968
期刊: Biochemistry
影响因子: 2.9
作者:
Y. Myer
通讯作者: Y. Myer
尿素和盐酸胍未折叠的铁细胞色素 c 的构象松弛。
DOI: 10.1016/s0021-9258(17)38308-4
发表时间: 1977
期刊: The Journal of biological chemistry
影响因子: --
作者:
T. Tsong
通讯作者: T. Tsong