[Beta]IV-spectrin regulates sodium channel clustering through ankyrin-G at axon initial segments and nodes of Ranvier.
[Beta]IV-spectrin regulates sodium channel clustering through ankyrin-G at axon initial segments and nodes of Ranvier.
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DOI:
10.1083/jcb.200110003
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发表时间:
2002-01-21
期刊:
影响因子:
--
通讯作者:
Soriano P
中科院分区:
文献类型:
--
作者:
Komada M;Soriano P
β-Spectrin and ankyrin are major components of the membrane cytoskeleton. We have generated mice carrying a null mutation in the βIV-spectrin gene using gene trapping in embryonic stem cells. Mice homozygous for the mutation exhibit tremors and contraction of hindlimbs. βIV-spectrin expression is mostly restricted to neurons, where it colocalizes with and binds to ankyrin-G at axon initial segments (AISs) and nodes of Ranvier (NR). In βIV-spectrin–null neurons, neither ankyrin-G nor voltage-gated sodium channels (VGSC) are correctly clustered at these sites, suggesting that impaired action potential caused by mislocalization of VGSC leads to the phenotype. Conversely, in ankyrin-G–null neurons, βIV-spectrin is not localized to these sites. These results indicate that βIV-spectrin and ankyrin-G mutually stabilize the membrane protein cluster and the linked membrane cytoskeleton at AIS and NR.
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影响因子:
7.8
作者:
More, M I;Kirsch, F P;Rathjen, F G
通讯作者:
Rathjen, F G
DOI:
10.1016/s0169-328x(98)00068-0
发表时间:
1998-06-15
期刊:
MOLECULAR BRAIN RESEARCH
影响因子:
--
作者:
Ohara, O;Ohara, R;Nakayama, M
通讯作者:
Nakayama, M
影响因子:
5.3
作者:
Rasband, MN;Peles, E;Shrager, P
通讯作者:
Shrager, P
DOI:
10.1083/jcb.135.5.1355
发表时间:
1996-12
期刊:
The Journal of cell biology
影响因子:
--
作者:
Davis JQ;Lambert S;Bennett V
通讯作者:
Bennett V
影响因子:
7.8
作者:
KENNEDY, SP;WARREN, SL;MORROW, JS
通讯作者:
MORROW, JS