Densin-180: revised membrane topology, domain structure and phosphorylation status.
Densin-180: revised membrane topology, domain structure and phosphorylation status.
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DOI:
10.1111/j.1471-4159.2009.05951.x
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发表时间:
2009-04
影响因子:
4.7
通讯作者:
Schoepfer R
中科院分区:
文献类型:
--
作者:
Thalhammer A;Trinidad JC;Burlingame AL;Schoepfer R
Densin-180 is a core component of post-synaptic densities, the highly complex molecular assemblies that mediate signaling between neuronal cells. It is a multi-domain scaffold protein characterized by multiple leucine-rich repeat domains plus a single Psd95/Discs large/Zona occludens-1 domain. In its original topology model a single transmembrane segment was proposed with an extracellular N-terminus and an intracellular C-terminus. However, recently discovered in vivo phosphorylation sites are incompatible with this topology. Here, we discuss an all-intracellular and membrane-associated localization of Densin-180 that is consistent with and supported by all the latest experimental data. This revised topology which now includes also a phosphorylation-rich area will have deciding influence on future research involving Densin-180 and its signaling.
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