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Open data
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Basic information
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Title | GATOR2 complex bound to arginine sensor CASTOR1 | |||||||||
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![]() | Complex / mTORC1 / Signaling / Nutrients / Amino Acid Sensing / SIGNALING PROTEIN | |||||||||
Function / homology | ![]() oligodendrocyte progenitor proliferation / GATOR2 complex / cellular response to L-arginine / molecular sensor activity / Seh1-associated complex / protein exit from endoplasmic reticulum / COPII-coated vesicle budding / central nervous system myelin formation / COPII-coated vesicle cargo loading / nuclear pore outer ring ...oligodendrocyte progenitor proliferation / GATOR2 complex / cellular response to L-arginine / molecular sensor activity / Seh1-associated complex / protein exit from endoplasmic reticulum / COPII-coated vesicle budding / central nervous system myelin formation / COPII-coated vesicle cargo loading / nuclear pore outer ring / nuclear pore organization / COPII vesicle coat / Nuclear Pore Complex (NPC) Disassembly / Transport of Ribonucleoproteins into the Host Nucleus / Regulation of Glucokinase by Glucokinase Regulatory Protein / Defective TPR may confer susceptibility towards thyroid papillary carcinoma (TPC) / Amino acids regulate mTORC1 / protein K6-linked ubiquitination / attachment of mitotic spindle microtubules to kinetochore / Transport of the SLBP independent Mature mRNA / NS1 Mediated Effects on Host Pathways / Transport of the SLBP Dependant Mature mRNA / SUMOylation of SUMOylation proteins / protein-containing complex localization / Transport of Mature mRNA Derived from an Intronless Transcript / Rev-mediated nuclear export of HIV RNA / Nuclear import of Rev protein / SUMOylation of RNA binding proteins / NEP/NS2 Interacts with the Cellular Export Machinery / tRNA processing in the nucleus / Transport of Mature mRNA derived from an Intron-Containing Transcript / arginine binding / Postmitotic nuclear pore complex (NPC) reformation / COPII-mediated vesicle transport / vacuolar membrane / nucleocytoplasmic transport / Viral Messenger RNA Synthesis / mitotic metaphase chromosome alignment / SUMOylation of ubiquitinylation proteins / Vpr-mediated nuclear import of PICs / oligodendrocyte differentiation / positive regulation of macroautophagy / SUMOylation of DNA replication proteins / Regulation of HSF1-mediated heat shock response / positive regulation of TOR signaling / mRNA transport / nuclear pore / SUMOylation of DNA damage response and repair proteins / cellular response to nutrient levels / negative regulation of TORC1 signaling / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / signaling adaptor activity / Mitotic Prometaphase / positive regulation of TORC1 signaling / EML4 and NUDC in mitotic spindle formation / MHC class II antigen presentation / cellular response to amino acid starvation / protein sequestering activity / Resolution of Sister Chromatid Cohesion / SUMOylation of chromatin organization proteins / HCMV Late Events / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / intracellular protein transport / Transcriptional regulation by small RNAs / ISG15 antiviral mechanism / RHO GTPases Activate Formins / ER to Golgi transport vesicle membrane / RING-type E3 ubiquitin transferase / kinetochore / autophagy / Separation of Sister Chromatids / HCMV Early Events / protein import into nucleus / ubiquitin protein ligase activity / cell junction / nuclear envelope / protein transport / snRNP Assembly / defense response to Gram-positive bacterium / regulation of autophagy / lysosomal membrane / cell division / intracellular membrane-bounded organelle / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / extracellular exosome / zinc ion binding / nucleoplasm / identical protein binding / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
![]() | Jansen RM / Hurley JH | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for mTORC1 regulation by the CASTOR1-GATOR2 complex. Authors: Rachel M Jansen / Clément Maghe / Karla Tapia / Selina Wu / Serim Yang / Xuefeng Ren / Roberto Zoncu / James H Hurley / ![]() Abstract: Mechanistic target of rapamycin complex 1 (mTORC1) is a nutrient-responsive master regulator of metabolism. Amino acids control the recruitment and activation of mTORC1 at the lysosome through the ...Mechanistic target of rapamycin complex 1 (mTORC1) is a nutrient-responsive master regulator of metabolism. Amino acids control the recruitment and activation of mTORC1 at the lysosome through the nucleotide loading state of the heterodimeric Rag GTPases. Under low nutrients, including arginine, the GTPase-activating protein complex GATOR1 promotes GTP hydrolysis on RagA/B, inactivating mTORC1. GATOR1 is regulated by the cage-like GATOR2 complex and cytosolic amino acid sensors. To understand how the arginine sensor CASTOR1 binds to GATOR2 to disinhibit GATOR1 under low cytosolic arginine, we determined the cryo-electron microscopy structure of human GATOR2 bound to CASTOR1 in the absence of arginine. Two MIOS WD40 domain β-propellers of the GATOR2 cage engage with both subunits of a single CASTOR1 homodimer. Each propeller binds to a negatively charged MIOS-binding interface on CASTOR1 that is distal to the arginine pocket. The structure shows how arginine-triggered loop ordering in CASTOR1 blocks the MIOS-binding interface, switches off its binding to GATOR2 and, thus, communicates to downstream mTORC1 activation. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 609.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 27 KB 27 KB | Display Display | ![]() |
Images | ![]() | 56 KB | ||
Filedesc metadata | ![]() | 8.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 494.2 KB | Display | ![]() |
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Full document | ![]() | 493.7 KB | Display | |
Data in XML | ![]() | 8.2 KB | Display | |
Data in CIF | ![]() | 9.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9otiMC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.05 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : GATOR2 complex bound to arginine sensor CASTOR1
+Supramolecule #1: GATOR2 complex bound to arginine sensor CASTOR1
+Supramolecule #2: GATOR2 Complex
+Supramolecule #3: CASTOR1
+Macromolecule #1: GATOR2 complex protein MIOS
+Macromolecule #2: GATOR complex protein WDR24
+Macromolecule #3: GATOR complex protein WDR59
+Macromolecule #4: Nucleoporin SEH1
+Macromolecule #5: Protein SEC13 homolog
+Macromolecule #6: Cytosolic arginine sensor for mTORC1 subunit 1
+Macromolecule #7: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |