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A genome-wide RNA interference screen uncovers two p24 proteins as regulators of Wingless secretion

机译:全基因组的RNA干扰筛选揭示了两个p24蛋白作为无翅分泌调节剂

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摘要

Wnt proteins are secreted, lipid-modified glycoproteins that control animal development and adult tissue homeostasis. Secretion of Wnt proteins is at least partly regulated by a dedicated machinery. Here, we report a genome-wide RNA interference screen for genes involved in the secretion of Wingless (Wg), a Drosophila Wnt. We identify three new genes required for Wg secretion. Of these, Emp24 and Eclair are required for proper export of Wg from the endoplasmic reticulum (ER). We propose that Emp24 and Eca act as specific cargo receptors for Wg to concentrate it in forming vesicles at sites of ER export.
机译:Wnt蛋白是分泌的脂质修饰的糖蛋白,可控制动物的发育和成年组织的稳态。 Wnt蛋白的分泌至少部分受专用机制的调节。在这里,我们报告了一个全基因组的RNA干扰筛查,涉及参与果蝇Wnt的Wingless(Wg)分泌的基因。我们确定了Wg分泌所需的三个新基因。其中,Emp24和Eclair是从内质网(ER)适当输出Wg所必需的。我们建议Emp24和Eca充当Wg的特定货物受体,以将其集中在ER出口处形成囊泡。

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