Structural basis for the assembly of the Ragulator-Rag GTPase complex.

Structural basis for the assembly of the Ragulator-Rag GTPase complex.
复制标题

DOI:
10.1038/s41467-017-01762-3
复制
发表时间:
2017-11-20
影响因子:
16.6
通讯作者:
Okada M
Okada M
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yonehara R;Nada S;Nakai T;Nakai M;Kitamura A;Ogawa A;Nakatsumi H;Nakayama KI;Li S;Standley DM;Yamashita E;Nakagawa A;Okada M

文献摘要

参考文献

相似文献

雷帕霉素复合物 1 (mTORC1) 的机制靶标通过响应细胞营养条件,在调节细胞生长和代谢方面发挥着核心作用。 mTORC1 的活性由 Rag GTPases 控制,Rag GTPases 通过 Ragulator 锚定在溶酶体上,Ragulator 是一种由膜锚定的 p18/LAMTOR1 和两个路障异二聚体组成的五聚蛋白复合物。在这里,我们报道了 Ragulator 与 RagA-C 路障结构域复合物的晶体结构,这有助于阐明 Rag GTPases 调节的分子基础。在该结构中,p18 包裹着三对路障异二聚体,将它们串联组装到溶酶体上。细胞和体外分析进一步证明 p18 是 Ragulator-Rag GTPase 组装和 mTORC1 氨基酸依赖性激活所必需的。这些结果确立了 p18 作为 Ragulator-Rag GTPase 复合物的关键组织支架,这可能为溶酶体上的营养传感提供平台。 mTORC1 活性通过 Rag GTPases 控制,Rag GTPases 通过 Ragulator 锚定在溶酶体上。在这里,作者给出了 Ragulator-Rag GTPase 组装的分子见解,并展示了单独的 Ragulator 以及与 RagA-C 路障结构域复合的 Ragulator 的晶体结构。
The mechanistic target of rapamycin complex 1 (mTORC1) plays a central role in regulating cell growth and metabolism by responding to cellular nutrient conditions. The activity of mTORC1 is controlled by Rag GTPases, which are anchored to lysosomes via Ragulator, a pentameric protein complex consisting of membrane-anchored p18/LAMTOR1 and two roadblock heterodimers. Here we report the crystal structure of Ragulator in complex with the roadblock domains of RagA-C, which helps to elucidate the molecular basis for the regulation of Rag GTPases. In the structure, p18 wraps around the three pairs of roadblock heterodimers to tandemly assemble them onto lysosomes. Cellular and in vitro analyses further demonstrate that p18 is required for Ragulator-Rag GTPase assembly and amino acid-dependent activation of mTORC1. These results establish p18 as a critical organizing scaffold for the Ragulator-Rag GTPase complex, which may provide a platform for nutrient sensing on lysosomes. mTORC1 activity is controlled through Rag GTPases, which are anchored to the lysosome through the Ragulator. Here, the authors give molecular insights into Ragulator-Rag GTPase assembly and present the crystal structures of the Ragulator alone and in complex with the RagA-C roadblock domains.
DOI: 10.1107/s090744491003982x
发表时间: 2011-04
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Evans PR
通讯作者: Evans PR
DOI: 10.1242/jcs.168922
发表时间: 2015-06-15
影响因子: 4
作者:
Dokudovskaya, Svetlana;Rout, Michael P.
通讯作者: Rout, Michael P.
MTORC1的信号整合与生物合成输出相协调的营养输入。
DOI: 10.1038/ncb2763
发表时间: 2013-06
影响因子: 21.3
作者:
通讯作者: --
DOI: 10.1107/s0907444909052925
发表时间: 2010-02
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者: Zwart PH
DOI: 10.1016/j.trecan.2016.03.008
发表时间: 2016-05
期刊: TRENDS IN CANCER
影响因子: 18.4
作者:
Ilagan, Erika;Manning, Brendan D.
通讯作者: Manning, Brendan D.