A triple arg motif mediates α(2B)-adrenergic receptor interaction with Sec24C/D and export.

A triple arg motif mediates α(2B)-adrenergic receptor interaction with Sec24C/D and export.
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DOI:
10.1111/j.1600-0854.2012.01351.x
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发表时间:
2012-06
期刊:
Traffic (Copenhagen, Denmark)
影响因子:
--
通讯作者:
Wu G
Wu G
中科院分区:
其他
文献类型:
--
作者:
Dong C;Nichols CD;Guo J;Huang W;Lambert NA;Wu G

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Recent studies have demonstrated that cargo exit from the endoplasmic reticulum (ER) may be directed by ER export motifs recognized by components of the COPII vesicles. However, little is known about ER export motifs and vesicle targeting of the G protein-coupled receptor (GPCR) superfamily. Here we have demonstrated that a triple Arg (3R) motif in the third intracellular loop functions as a novel ER export signal for α2B-adrenergic receptor (α2B-AR). The 3R motif mediates α2B-AR interaction with Sec24C/D and modulates ER exit, cell surface transport, and function of α2B-AR. Furthermore, export function of the 3R motif is independent of its position within α2B-AR and can be conferred to CD8 glycoprotein. These data provide the first evidence implicating that export of GPCRs is controlled by code-directed interactions with selective components of the COPII transport machinery.
人类Copii外套机制的货物膜蛋白歧视的结构基础。
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