Head and Rod 1 Interactions in Vimentin
Head and Rod 1 Interactions in Vimentin
复制标题
波形蛋白中头和杆 1 的相互作用
DOI:
--
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发表时间:
2009
影响因子:
4.8
通讯作者:
J. Voss
中科院分区:
文献类型:
--
作者:
A. Aziz;J. Hess;Madhu S. Budamagunta;P. Fitzgerald;J. Voss
We have used site-directed spin labeling (SDSL) and electron paramagnetic resonance (EPR) to identify residues 17 and 137 as sites of interaction between the head domain and rod domain 1A of the intermediate filament protein vimentin. This interaction was maximal when compared with the spin labels placed at up- and downstream positions in both head and rod regions, indicating that residues 17 and 137 were the closest point of interaction in this region. SDSL EPR characterization of residues 120-145, which includes the site of head contact with rod 1A, reveals that this region exhibits the heptad repeat pattern indicative of α-helical coiled-coil structure, but that this heptad repeat pattern begins to decay near residue 139, suggesting a transition out of coiled-coil structure. By monitoring the spectra of spin labels placed at the 17 and 137 residues during in vitro assembly, we show that 17-137 interaction occurs early in the assembly process. We also explored the effect of phosphorylation on the 17-137 interaction and found that phosphorylation-induced changes affected the head-head interaction (17-17) in the dimer, without significantly influencing the rod-rod (137-137) and head-rod (17-137) interactions in the dimer. These data provide the first direct evidence for, and location of, headrod interactions in assembled intermediate filaments, as well as direct evidence of coiled-coil structure in rod 1A. Finally, the data identify changes in the structure in this region following in vitro phosphorylation.
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影响因子:
2.9
作者:
Pittenger,JoshT;Hess,JohnF;Budamagunta,MadhuS;Voss,JohnC;Fitzgerald,PaulG
通讯作者:
Fitzgerald,PaulG
DOI:
10.1073/pnas.92.18.8259
发表时间:
1995-08-29
影响因子:
11.1
作者:
BERGER, B;WILSON, DB;KIM, PS
通讯作者:
KIM, PS
影响因子:
5.6
作者:
Mücke, N;Wedig, T;Herrmann, H
通讯作者:
Herrmann, H
DOI:
10.1046/j.1432-1327.2001.01946.x
发表时间:
2001
期刊:
European journal of biochemistry
影响因子:
--
作者:
Chomiki,N;Voss,JC;Warden,CH
通讯作者:
Warden,CH
影响因子:
3.7
作者:
Oshima,RobertG
通讯作者:
Oshima,RobertG