Regulation of Kalirin by Cdk5.
Regulation of Kalirin by Cdk5.
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DOI:
10.1242/jcs.016089
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发表时间:
2008-08-01
影响因子:
4
通讯作者:
Eipper BA
中科院分区:
文献类型:
--
作者:
Xin X;Wang Y;Ma XM;Rompolas P;Keutmann HT;Mains RE;Eipper BA
Kalirin, one of the few Rho GDP/GTP exchange factors (GEFs) that includes spectrin-like repeats, plays a critical role in axon extension and maintenance of dendritic spines. PC12 cells were used to determine whether Cdk5, a critical participant in both processes, regulates the actions of Kalirin. Expression of Kalirin 7 in non-differentiated PC12 cells caused the GEF-activity dependent extension of broad cytoplasmic protrusions; co-expression of dominant negative Cdk5 largely eliminated this response. The spectrin-like repeat region of Kalirin plays an essential role in this response, which is not mimicked by the GEF domain alone. Thr1590, which follows the first GEF domain of Kalirin, is the only Cdk5 phosphorylation site in Kalirin 7. Although Kalirin 7/Ala1590 retains GEF activity, it is unable to cause extension of protrusions. Kalirin 7/Asp1590 has slightly increased GEF activity and DN-Cdk5 fails to block its ability to cause extension of protrusions. Phosphorylation of Thr1590 causes a slight increase in GEF activity and Kalirin 7 solubility. Dendritic spines formed by cortical neurons in response to the expression of Kalirin 7/Ala1590 differ in shape from those formed in response to Kalirin 7 or Kalirin 7/Asp1590. The presence of Thr1590 in each major Kalirin isoform would allow Cdk5 to regulate Kalirin function throughout development
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影响因子:
9.2
作者:
Estrach, S;Schmidt, S;Debant, A
通讯作者:
Debant, A
影响因子:
--
作者:
Kesavapany, Sashi;Pareek, Tej Kumar;Pant, Harish C.
通讯作者:
Pant, Harish C.
DOI:
10.1083/jcb.103.2.545
发表时间:
1986-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Black MM;Aletta JM;Greene LA
通讯作者:
Greene LA
DOI:
10.1073/pnas.93.11.5466
发表时间:
1996-05-28
影响因子:
11.1
作者:
Debant, A;SerraPages, C;Streuli, M
通讯作者:
Streuli, M
DOI:
10.1016/j.bbrc.2004.09.109
发表时间:
2004-11-12
影响因子:
3.1
作者:
Canduri, F;Uchoa, HB;de Azevedo, WF
通讯作者:
de Azevedo, WF