Structural basis for the assembly of the Ragulator-Rag GTPase complex.
Structural basis for the assembly of the Ragulator-Rag GTPase complex.
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DOI:
10.1038/s41467-017-01762-3
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发表时间:
2017-11-20
影响因子:
16.6
通讯作者:
Okada M
中科院分区:
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
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.
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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
影响因子:
4
作者:
Dokudovskaya, Svetlana;Rout, Michael P.
通讯作者:
Rout, Michael P.
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
影响因子:
18.4
作者:
Ilagan, Erika;Manning, Brendan D.
通讯作者:
Manning, Brendan D.