Slow, reversible, coupled folding and binding of the spectrin tetramerization domain.
Slow, reversible, coupled folding and binding of the spectrin tetramerization domain.
复制标题
血影蛋白四聚化结构域的缓慢、可逆、耦合折叠和结合。
DOI:
10.1016/j.bpj.2012.10.012
复制
发表时间:
2012
影响因子:
3.4
通讯作者:
J. Clarke
中科院分区:
文献类型:
--
作者:
S. Shammas;J. M. Rogers;S. A. Hill;J. Clarke
Many intrinsically disordered proteins (IDPs) are significantly unstructured under physiological conditions. A number of these IDPs have been shown to undergo coupled folding and binding reactions whereby they can gain structure upon association with an appropriate partner protein. In general, these systems display weaker binding affinities than do systems with association between completely structured domains, with micromolarKdvalues appearing typical. One such system is the association betweenα- andβ-spectrin, where two partially structured, incomplete domains associate to form a fully structured, three-helix bundle, the spectrin tetramerization domain. Here, we use this model system to demonstrate a method for fitting association and dissociation kinetic traces where, using typical biophysical concentrations, the association reactions are expected to be highly reversible. We elucidate the unusually slow, two-state kinetics of spectrin assembly in solution. The advantages of studying kinetics in this regime include the potential for gaining equilibrium constants as well as rate constants, and for performing experiments with low protein concentrations. We suggest that this approach would be particularly appropriate for high-throughput mutational analysis of two-state reversible binding processes.
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影响因子:
2.9
作者:
ZITZEWITZ, JA;BILSEL, O;MATTHEWS, CR
通讯作者:
MATTHEWS, CR
影响因子:
20.3
作者:
Ipsaro, Jonathan J.;Harper, Sandra L.;Speicher, David W.
通讯作者:
Speicher, David W.
DOI:
10.1073/pnas.89.8.3338
发表时间:
1992-04-15
影响因子:
11.1
作者:
NORTHRUP, SH;ERICKSON, HP
通讯作者:
ERICKSON, HP
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bowman,BF;Peterson,JA;Stull,JT
通讯作者:
Stull,JT
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Swope,SL;Huganir,RL
通讯作者:
Huganir,RL