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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >GTP-bound forms of rab6 induce the redistribution of Golgi proteins into the endoplasmic reticulum
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GTP-bound forms of rab6 induce the redistribution of Golgi proteins into the endoplasmic reticulum

机译:GTP结合形式的rab6诱导高尔基体蛋白向内质网的重新分布

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摘要

rab6 is a ubiquitous ras-like GTPase in- volved in intra-Golgi transport. We have studied at both morphological and biochemical levels the behavior of Golgi resident proteins in HeLa cells overexpressing wild-type rab6 and GTP- and GDP-bound mutants of rab6 (rab6 Q72L and rab6 T27N, respectively). We show that wild-type rab6 and rab6 Q72L overexpression induces the redistribution of the trans-Golgi protein β-1,4-galactosyltransferase into the en- doplasmic reticulum (ER) and allows the addition of sialylated O-glycans on an ER-retained protein, the major histocompat- ibility complex class II-associated invariant chain.
机译:rab6是一种参与高尔基体内运输的普遍存在的ras样GTP酶。我们已经在形态和生化水平上研究了高表达野生型rab6和rab6的GTP结合和GDP结合的突变体(分别是rab6 Q72L和rab6 T27N)的HeLa细胞中高尔基驻留蛋白的行为。我们显示野生型rab6和rab6 Q72L过表达诱导反高尔基体蛋白β-1,4-半乳糖基转移酶重新分布到内质网(ER)中,并允许在ER保留的区域添加唾液酸化O-聚糖蛋白质,主要的组织相容性复合物II类相关不变链。

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