Assembly stoichiometry of the GluK2/GluK5 kainate receptor complex.
Assembly stoichiometry of the GluK2/GluK5 kainate receptor complex.
复制标题
DOI:
10.1016/j.celrep.2012.01.003
复制
发表时间:
2012-03-29
期刊:
影响因子:
8.8
通讯作者:
Isacoff EY
中科院分区:
文献类型:
--
作者:
Reiner A;Arant RJ;Isacoff EY
Ionotropic glutamate receptors assemble as homo- or heterotetramers. One well-studied heteromeric complex is formed by the kainate receptor subunits GluK2 and GluK5. Retention motifs prevent trafficking of GluK5 homomers to the plasma membrane, but co-assembly with GluK2 yields functional heteromeric receptors. Additional control over GluK2/GluK5 assembly seems to be exerted by the amino-terminal domains, which preferentially assemble into heterodimers as isolated domains. However, the stoichiometry of the full-length GluK2/GluK5 heteromeric receptor has yet to be determined, as is the case for all non-NMDA glutamate receptors. Here we address this question using a single-molecule imaging technique that enables direct counting of the number of each GluK subunit type in homomeric and heteromeric receptors in the plasma membranes of live cells. We show that GluK2 and GluK5 assemble with 2:2 stoichiometry. This is an important step towards understanding the assembly mechanism, architecture and functional consequences of heteromer formation in ionotropic glutamate receptors.
登录
查看更多内容
影响因子:
16.2
作者:
Mansour, M;Nagarajan, N;Rosenmund, C
通讯作者:
Rosenmund, C
影响因子:
16.2
作者:
Ayalon, G;Stern-Bach, Y
通讯作者:
Stern-Bach, Y
影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1016/j.bbrc.2003.08.115
发表时间:
2003-10-10
影响因子:
3.1
作者:
Hayes, DM;Braud, S;Roche, KW
通讯作者:
Roche, KW
影响因子:
5.3
作者:
Christensen, JK;Paternain, AV;Lerma, J
通讯作者:
Lerma, J