8FW5

Chimeric HsGATOR1-SpGtr-SpLam complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.08 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.1 of the entry. See complete history


Literature

Structure of the Schizosaccharomyces pombe Gtr-Lam complex reveals evolutionary divergence of mTORC1-dependent amino acid sensing.

Tettoni, S.D.Egri, S.B.Doxsey, D.D.Veinotte, K.Ouch, C.Chang, J.Y.Song, K.Xu, C.Shen, K.

(2023) Structure 31: 1065-1076.e5

  • DOI: https://doi.org/10.1016/j.str.2023.06.012
  • Primary Citation of Related Structures:  
    8FW5

  • PubMed Abstract: 

    mTORC1 is a protein kinase complex that controls cellular growth in response to nutrient availability. Amino acid signals are transmitted toward mTORC1 via the Rag/Gtr GTPases and their upstream regulators. An important regulator is LAMTOR, which localizes Rag/Gtr on the lysosomal/vacuole membrane. In human cells, LAMTOR consists of five subunits, but in yeast, only three or four. Currently, it is not known how variation of the subunit stoichiometry may affect its structural organization and biochemical properties. Here, we report a 3.1 Å-resolution structural model of the Gtr-Lam complex in Schizosaccharomyces pombe. We found that SpGtr shares conserved architecture as HsRag, but the intersubunit communication that coordinates nucleotide loading on the two subunits differs. In contrast, SpLam contains distinctive structural features, but its GTP-specific GEF activity toward SpGtr is evolutionarily conserved. Our results revealed unique evolutionary paths of the protein components of the mTORC1 pathway.


  • Organizational Affiliation

    Program in Molecular Medicine, University of Massachusetts Chan Medical School, 373 Plantation Street, Worcester, MA 01605, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GATOR complex protein DEPDC51,603Homo sapiensMutation(s): 1 
Gene Names: DEPDC5KIAA0645
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Find proteins for O75140 (Homo sapiens)
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PHAROS:  O75140
GTEx:  ENSG00000100150 
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UniProt GroupO75140
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
GATOR complex protein NPRL2401Homo sapiensMutation(s): 0 
Gene Names: NPRL2TUSC4
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Find proteins for Q8WTW4 (Homo sapiens)
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PHAROS:  Q8WTW4
GTEx:  ENSG00000114388 
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UniProt GroupQ8WTW4
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
GATOR complex protein NPRL3590Homo sapiensMutation(s): 0 
Gene Names: NPRL3C16orf35CGTHBAMARE
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Find proteins for Q12980 (Homo sapiens)
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PHAROS:  Q12980
GTEx:  ENSG00000103148 
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UniProt GroupQ12980
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
GTP-binding protein Gtr1321Escherichia coliMutation(s): 0 
EC: 3.6.5
UniProt
Find proteins for O74824 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
GTP-binding protein Gtr2314Escherichia coliMutation(s): 0 
EC: 3.6.5
UniProt
Find proteins for O74544 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Schizosaccharomyces pombe LAM1, Human LAMTOR1 ortholog377Escherichia coliMutation(s): 0 
EC: 2.5.1.18
UniProt
Find proteins for P08515 (Schistosoma japonicum)
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Find proteins for C6Y4C6 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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UniProt GroupsP08515C6Y4C6
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Schizosaccharomyces pombe LAM2, Human LAMTOR2 ortholog181Escherichia coliMutation(s): 0 
UniProt
Find proteins for Q9Y7J2 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Schizosaccharomyces pombe LAM3, Human LAMTOR3 ortholog117Escherichia coliMutation(s): 0 
UniProt
Find proteins for G2TRJ4 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Schizosaccharomyces pombe LAM4, Human LAMTOR5 ortholog81Escherichia coliMutation(s): 0 
UniProt
Find proteins for C6Y4A8 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.08 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
American Heart AssociationUnited States--
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2023-07-26
    Type: Initial release
  • Version 1.1: 2023-09-20
    Changes: Data collection, Database references