6JWP

crystal structure of EGOC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 

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Literature

Structural insights into the EGO-TC-mediated membrane tethering of the TORC1-regulatory Rag GTPases.

Zhang, T.Peli-Gulli, M.P.Zhang, Z.Tang, X.Ye, J.De Virgilio, C.Ding, J.

(2019) Sci Adv 5: eaax8164-eaax8164

  • DOI: 10.1126/sciadv.aax8164
  • Primary Citation of Related Structures:  
    6JWP

  • PubMed Abstract: 
  • The Rag/Gtr GTPases serve as a central module in the nutrient-sensing signaling network upstream of TORC1. In yeast, the anchoring of Gtr1-Gtr2 to membranes depends on the Ego1-Ego2-Ego3 ternary complex (EGO-TC), resulting in an EGO-TC-Gtr1-Gtr2 complex (EGOC) ...

    The Rag/Gtr GTPases serve as a central module in the nutrient-sensing signaling network upstream of TORC1. In yeast, the anchoring of Gtr1-Gtr2 to membranes depends on the Ego1-Ego2-Ego3 ternary complex (EGO-TC), resulting in an EGO-TC-Gtr1-Gtr2 complex (EGOC). EGO-TC and human Ragulator share no obvious sequence similarities and also differ in their composition with respect to the number of known subunits, which raises the question of how the EGO-TC fulfills its function in recruiting Gtr1-Gtr2. Here, we report the structure of EGOC, in which Ego1 wraps around Ego2, Ego3, and Gtr1-Gtr2. In addition, Ego3 interacts with Gtr1-Gtr2 to stabilize the complex. The functional roles of key residues involved in the assembly are validated by in vivo assays. Our structural and functional data combined demonstrate that EGOC and Ragulator-Rag complex are structurally conserved and that EGO-TC is essential and sufficient to recruit Gtr1-Gtr2 to membranes to ensure appropriate TORC1 signaling.


    Organizational Affiliation

    School of Life Science and Technology, ShanghaiTech University, 393 Hua-Xia Zhong Road, Shanghai 201210, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GTP-binding protein GTR1A, F312Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: GTR1YML121WYM7056.05
UniProt
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
GTP-binding protein GTR2B, G345Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: GTR2YGR163W
UniProt
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein MEH1C, H129Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MEH1EGO1GSE2YKR007WYK106
UniProt
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Ego2D, I75Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: Gtr2YCR075W-A
UniProt
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Protein SLM4E, J162Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: EGO3SLM4GSE1YBR077CYBR0723
UniProt
Find proteins for P38247 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.675α = 90
b = 120.547β = 90
c = 323.274γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2019-04-21 
  • Released Date: 2019-12-11 
  • Deposition Author(s): Zhang, T., Ding, J.

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-11
    Type: Initial release