タンパク質・ペプチド: Target of rapamycin complex subunit LST8
複合体: RagA/C
タンパク質・ペプチド: Ras-related GTP-binding protein A
タンパク質・ペプチド: Ras-related GTP-binding protein C
タンパク質・ペプチド: Regulatory-associated protein of mTOR
リガンド: GUANOSINE-5'-TRIPHOSPHATE
リガンド: GUANOSINE-5'-DIPHOSPHATE
キーワード
small GTPases / mTORC1 activator / roadblock domain / GTPase domain / SIGNALING PROTEIN
機能・相同性
機能・相同性情報
Gtr1-Gtr2 GTPase complex / FNIP-folliculin RagC/D GAP / positive regulation of cytoplasmic translational initiation / positive regulation of pentose-phosphate shunt / RNA polymerase III type 1 promoter sequence-specific DNA binding / RNA polymerase III type 2 promoter sequence-specific DNA binding / T-helper 1 cell lineage commitment / regulation of locomotor rhythm / positive regulation of wound healing, spreading of epidermal cells / cellular response to leucine starvation ...Gtr1-Gtr2 GTPase complex / FNIP-folliculin RagC/D GAP / positive regulation of cytoplasmic translational initiation / positive regulation of pentose-phosphate shunt / RNA polymerase III type 1 promoter sequence-specific DNA binding / RNA polymerase III type 2 promoter sequence-specific DNA binding / T-helper 1 cell lineage commitment / regulation of locomotor rhythm / positive regulation of wound healing, spreading of epidermal cells / cellular response to leucine starvation / regulation of TORC1 signaling / regulation of membrane permeability / heart valve morphogenesis / TFIIIC-class transcription factor complex binding / negative regulation of lysosome organization / RNA polymerase III type 3 promoter sequence-specific DNA binding / TORC2 complex / TORC1 complex / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / protein localization to lysosome / regulation of autophagosome assembly / calcineurin-NFAT signaling cascade / nucleus localization / TORC1 signaling / voluntary musculoskeletal movement / positive regulation of odontoblast differentiation / regulation of osteoclast differentiation / positive regulation of keratinocyte migration / regulation of TOR signaling / cellular response to L-leucine / MTOR signalling / Amino acids regulate mTORC1 / cellular response to nutrient / energy reserve metabolic process / Energy dependent regulation of mTOR by LKB1-AMPK / negative regulation of cell size / ruffle organization / protein serine/threonine kinase inhibitor activity / protein localization to membrane / positive regulation of osteoclast differentiation / cellular response to osmotic stress / enzyme-substrate adaptor activity / negative regulation of protein localization to nucleus / anoikis / cardiac muscle cell development / positive regulation of transcription by RNA polymerase III / negative regulation of calcineurin-NFAT signaling cascade / regulation of myelination / regulation of cell size / Macroautophagy / positive regulation of oligodendrocyte differentiation / small GTPase-mediated signal transduction / negative regulation of macroautophagy / positive regulation of actin filament polymerization / lysosome organization / positive regulation of myotube differentiation / protein kinase activator activity / behavioral response to pain / oligodendrocyte differentiation / Constitutive Signaling by AKT1 E17K in Cancer / mTORC1-mediated signalling / germ cell development / CD28 dependent PI3K/Akt signaling / cellular response to nutrient levels / positive regulation of phosphoprotein phosphatase activity / social behavior / HSF1-dependent transactivation / positive regulation of TOR signaling / TOR signaling / neuronal action potential / positive regulation of translational initiation / response to amino acid / positive regulation of G1/S transition of mitotic cell cycle / regulation of macroautophagy / endomembrane system / 'de novo' pyrimidine nucleobase biosynthetic process / positive regulation of epithelial to mesenchymal transition / positive regulation of lamellipodium assembly / positive regulation of lipid biosynthetic process / heart morphogenesis / cardiac muscle contraction / regulation of cellular response to heat / protein-membrane adaptor activity / positive regulation of stress fiber assembly / 14-3-3 protein binding / cytoskeleton organization / positive regulation of endothelial cell proliferation / positive regulation of TORC1 signaling / tumor necrosis factor-mediated signaling pathway / T cell costimulation / cellular response to amino acid starvation / cellular response to starvation / phagocytic vesicle / positive regulation of glycolytic process / negative regulation of autophagy / protein serine/threonine kinase activator activity / response to nutrient levels / RNA splicing / response to nutrient / post-embryonic development 類似検索 - 分子機能
Raptor, N-terminal CASPase-like domain / Raptor N-terminal CASPase like domain / Raptor N-terminal CASPase like domain / Regulatory associated protein of TOR / RagA/B / Gtr1/RagA G protein / RagC/D / Gtr1/RagA G protein conserved region / Target of rapamycin complex subunit LST8 / Domain of unknown function DUF3385, target of rapamycin protein ...Raptor, N-terminal CASPase-like domain / Raptor N-terminal CASPase like domain / Raptor N-terminal CASPase like domain / Regulatory associated protein of TOR / RagA/B / Gtr1/RagA G protein / RagC/D / Gtr1/RagA G protein conserved region / Target of rapamycin complex subunit LST8 / Domain of unknown function DUF3385, target of rapamycin protein / Serine/threonine-protein kinase mTOR domain / Domain of unknown function / FKBP12-rapamycin binding domain / Serine/threonine-protein kinase TOR / FKBP12-rapamycin binding domain superfamily / FKBP12-rapamycin binding domain / HEAT repeat / HEAT repeat / Rapamycin binding domain / PIK-related kinase, FAT / FAT domain / FATC domain / FATC / FATC domain / PIK-related kinase / FAT domain profile. / FATC domain profile. / Quinoprotein alcohol dehydrogenase-like superfamily / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / Armadillo-like helical / Tetratricopeptide-like helical domain superfamily / Armadillo-type fold / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / Protein kinase-like domain superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Serine/threonine-protein kinase mTOR / Ras-related GTP-binding protein A / Regulatory-associated protein of mTOR / Target of rapamycin complex subunit LST8 / Ras-related GTP-binding protein C 類似検索 - 構成要素
ジャーナル: Science / 年: 2019 タイトル: Architecture of human Rag GTPase heterodimers and their complex with mTORC1. 著者: Madhanagopal Anandapadamanaban / Glenn R Masson / Olga Perisic / Alex Berndt / Jonathan Kaufman / Chris M Johnson / Balaji Santhanam / Kacper B Rogala / David M Sabatini / Roger L Williams / 要旨: The Rag guanosine triphosphatases (GTPases) recruit the master kinase mTORC1 to lysosomes to regulate cell growth and proliferation in response to amino acid availability. The nucleotide state of Rag ...The Rag guanosine triphosphatases (GTPases) recruit the master kinase mTORC1 to lysosomes to regulate cell growth and proliferation in response to amino acid availability. The nucleotide state of Rag heterodimers is critical for their association with mTORC1. Our cryo-electron microscopy structure of RagA/RagC in complex with mTORC1 shows the details of RagA/RagC binding to the RAPTOR subunit of mTORC1 and explains why only the RagA/RagC nucleotide state binds mTORC1. Previous kinetic studies suggested that GTP binding to one Rag locks the heterodimer to prevent GTP binding to the other. Our crystal structures and dynamics of RagA/RagC show the mechanism for this locking and explain how oncogenic hotspot mutations disrupt this process. In contrast to allosteric activation by RHEB, Rag heterodimer binding does not change mTORC1 conformation and activates mTORC1 by targeting it to lysosomes.
凍結剤: ETHANE / チャンバー内湿度: 95 % / 装置: FEI VITROBOT MARK III
詳細
mTORC1 (mTOR complex 1) is a dimer consists of three proteins: mTOR, mLST8 and RAPTOR. The small GTPases, RagA/C in its active form bind to mTORC1 for activation. We solved the cryo-EM structure of mTORC1 bound to RagA/C.
詳細: For building the mTORC1 structure we used the previously published apo-mTORC1 structure 6BCX, and for RagA/C structure we used our high-resolution crystal structure PDB ID 6S6A.
最終 再構成
想定した対称性 - 点群: C1 (非対称) / アルゴリズム: FOURIER SPACE / 解像度のタイプ: BY AUTHOR / 解像度: 6.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.0.6) 詳細: For the final reconstruction of mTORC1-RagA/C structure we used a strategy taking advantage of the relion particle symmetry expand program, and duplicated the C2-refined particles and applied ...詳細: For the final reconstruction of mTORC1-RagA/C structure we used a strategy taking advantage of the relion particle symmetry expand program, and duplicated the C2-refined particles and applied the appropriate rotation and translation to generate a set of monomers. We performed mTORC1-RagA/C 'pseudo-monomer' focussed classification with signal subtraction and obtained a reconstruction of 6.2 A resolution map. This cryo-EM density corresponded to the mTORC1-RagA/C pseudomonomer, where the previously published structure for apo-mTORC1 (PDB ID 6BCX) and our high-resolution crystal structure of RagA/C (6S6A) were fitted with great confidence from our experimental analysis including Pulldown assays, mutational at per-residue level in the binding interface and HDX-Mass Spectrometry. 使用した粒子像数: 51902
初期 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.0.6)
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.0.6)
source_name: PDB, initial_model_type: experimental model
詳細
Cryo-EM model of mTORC1-RagA/C was refined using REFMAC5 program in CCPEM package, with a composite map of the 3D reconstruction of mTORC1-RagA/C pseudo-monomer (as mentioned in Reconstruction section) of one protomer together with the generated map for the other second protomer of mTORC1-RagA/C. This second protomer of mTORC1-RagA/C map was generated by simply aligning the first 3D reconstructed pseudomonomer map onto the mTORC1 dimer consensus C2 map and then obtained the rotation-translation matrix with CHIMERA and then used Maputils program in CCP4i. From the resulting mTORC1-RagA/C dimer map, the model of mTORC1-RagA/C was built by using previously published structure of apo-mTORC1 (PDB ID 6BCX) and our crystal structure of RagA/C was fitted (PDB ID 6S6A, unreleased). The entire mTORC1-RagA/C final model was refined using REFMAC5 program using the restraints from the crystal structure of RagA/C and previously published mTORC1 structure. Side chains were removed before refinement, since these were not evident in the cryo-EM densities. Separate model refinements were performed against single half-maps, and the resulting models were compared with the other half-maps to confirm the absence of overfitting.
精密化
空間: REAL / プロトコル: RIGID BODY FIT / 温度因子: 315
得られたモデル
PDB-6sb2: cryo-EM structure of mTORC1 bound to active RagA/C GTPases