Differential regulation by ATP versus ADP further links CaMKII aggregation to ischemic conditions.

Differential regulation by ATP versus ADP further links CaMKII aggregation to ischemic conditions.
复制标题

DOI:
10.1016/j.febslet.2009.10.028
复制
发表时间:
2009-11-19
期刊:
影响因子:
3.5
通讯作者:
Bayer, K. Ulrich
Bayer, K. Ulrich
中科院分区:
生物学3区
文献类型:
--
作者:
Vest, Rebekah S.;O'Leary, Heather;Bayer, K. Ulrich

文献摘要

参考文献

被引文献

相似文献

CaMKII是突触可塑性的主要调节因子,在缺血条件下形成突触外簇。本研究进一步支持CaMKII全酶自聚集的潜在机制。体外聚集通过模拟缺血条件促进:低pH(6.8或更低),Ca2+(和钙调素),低ATP和/或高ADP浓度。突变分析表明,高ATP通过一种涉及T286自磷酸化的机制阻止了聚集,并且表明神经元内突触外聚集需要核苷酸结合而不是自磷酸化。这些结果澄清了先前明显的核苷酸和磷酸化聚集要求的矛盾,并支持了涉及全酶间t286区域/ t位点相互作用的机制。
CaMKII, a major mediator of synaptic plasticity, forms extra-synaptic clusters under ischemic conditions. This study further supports self-aggregation of CaMKII holoenzymes as the underlying mechanism. Aggregation in vitro was promoted by mimicking ischemic conditions: low pH (6.8 or less), Ca2+ (and calmodulin), and low ATP and/or high ADP concentration. Mutational analysis showed that high ATP prevented aggregation by a mechanism involving T286 auto-phosphorylation, and indicated requirement for nucleotide binding but not auto-phosphorylation also for extra-synaptic clustering within neurons. These results clarify a previously apparent paradox in the nucleotide and phosphorylation requirement of aggregation, and support a mechanism that involves inter-holoenzyme T286-region/T-site interaction.
DOI: 10.1523/jneurosci.20-09-03076.2000
发表时间: 2000-05-01
影响因子: 5.3
作者:
Dosemeci, A;Reese, TS;Cheng, JHT
通讯作者: Cheng, JHT
DOI: 10.1523/jneurosci.21-23-09204.2001
发表时间: 2001-12-01
影响因子: 5.3
作者:
Mabuchi, T;Kitagawa, K;Matsumoto, M
通讯作者: Matsumoto, M
DOI: 10.1016/j.cell.2005.10.029
发表时间: 2005-12-02
期刊: CELL
影响因子: 64.5
作者:
Rosenberg, OS;Deindl, S;Kuriyan, J
通讯作者: Kuriyan, J
DOI: 10.1046/j.1471-4159.2001.00119.x
发表时间: 2001-03-01
影响因子: 4.7
作者:
Hudmon, A;Kim, SA;Waxham, MN
通讯作者: Waxham, MN
DOI: 10.1016/s0169-328x(00)00226-6
发表时间: 2000-12-28
期刊: MOLECULAR BRAIN RESEARCH
影响因子: --
作者:
Laabich, A;Cooper, NGF
通讯作者: Cooper, NGF