Activity-dependent phosphorylation of dynamin 1 at serine 857.
Activity-dependent phosphorylation of dynamin 1 at serine 857.
复制标题
动力蛋白 1 在丝氨酸 857 处的活性依赖性磷酸化。
DOI:
10.1021/bi2017798
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发表时间:
2012
期刊:
影响因子:
2.9
通讯作者:
Hwang,Yu-Wen
中科院分区:
文献类型:
--
作者:
Xie,Wen;Adayev,Tatyana;Zhu,Huiyuan;Wegiel,Jerzy;Wieraszko,Andrzej;Hwang,Yu-Wen
Dynamin 1 is thought to mediate synaptic transmission through interactions with multiple endocytic accessory proteins in a phosphorylation-dependent manner. Previously, we have shown that DYRK1A, a chromosome 21-encoded kinase implicated in the mental retardation of Down syndrome, phosphorylates primarily serine 857 (S857) in the proline-rich domain, found only in 1xa, one of the alternative C-terminal splicing isoforms of dynamin 1. Dynamin 1xa and 1xb isoforms are able to assemble into heterologous complexes and are coregulated by DYRK1A phosphorylation in binding to amphiphysin in vitro. To help in assessing the physiological significance of S857 phosphorylation, we developed a semiquantitative method for measuring the cellular level of phospho-S857 (pS857). Dynamin 1xa is highly phosphorylated at S857 in resting hippocampal neurons and in a hippocampal cell line, with >60% of all endogenous protein phosphorylated at this residue. In the hippocampus, the level of pS857 is dynamically controlled by synaptic stimulations with the involvement of Ca2+/calcineurin and AMPA/kainate receptors. Immunofluorescence staining shows that pS857 is found in the soma and throughout the entire length of apical dendrites in resting pyramidal neurons. Neuronal stimulation in the Schaffer collateral pathway promotes pS857 dephosphorylation in distal areas of apical dendrites, the region forming synapses with the impinging axons of Schaffer collateral. In summary, our results support the conclusion that S857 phosphorylation is a physiological event and its level is modulated by neuronal activity in nerve terminals.
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影响因子:
2.5
作者:
Dowjat, Wieslaw K.;Adayev, Tatyana;Wegiel, Jerzy
通讯作者:
Wegiel, Jerzy
影响因子:
4.2
作者:
A. Muzzolini;G. Bregola;C. Bianchi;L. Beani;M. Simonato
通讯作者:
M. Simonato
影响因子:
11.8
作者:
Macia, Eric;Ehrlich, Marcelo;Kirchhausen, Tomas
通讯作者:
Kirchhausen, Tomas
DOI:
10.1523/jneurosci.1976-09.2009
发表时间:
2009-06-17
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Clayton EL;Anggono V;Smillie KJ;Chau N;Robinson PJ;Cousin MA
通讯作者:
Cousin MA
DOI:
10.1007/978-3-7091-6721-2_2
发表时间:
2003
期刊:
Journal of neural transmission. Supplementum
影响因子:
--
作者:
Gardiner,K
通讯作者:
Gardiner,K