5DJ4

Leucine-bound Sestrin2 from Homo sapiens


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.697 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for leucine sensing by the Sestrin2-mTORC1 pathway.

Saxton, R.A.Knockenhauer, K.E.Wolfson, R.L.Chantranupong, L.Pacold, M.E.Wang, T.Schwartz, T.U.Sabatini, D.M.

(2016) Science 351: 53-58

  • DOI: 10.1126/science.aad2087
  • Also Cited By: 5T0N

  • PubMed Abstract: 
  • Eukaryotic cells coordinate growth with the availability of nutrients through the mechanistic target of rapamycin complex 1 (mTORC1), a master growth regulator. Leucine is of particular importance and activates mTORC1 via the Rag guanosine triphospha ...

    Eukaryotic cells coordinate growth with the availability of nutrients through the mechanistic target of rapamycin complex 1 (mTORC1), a master growth regulator. Leucine is of particular importance and activates mTORC1 via the Rag guanosine triphosphatases and their regulators GATOR1 and GATOR2. Sestrin2 interacts with GATOR2 and is a leucine sensor. Here we present the 2.7 angstrom crystal structure of Sestrin2 in complex with leucine. Leucine binds through a single pocket that coordinates its charged functional groups and confers specificity for the hydrophobic side chain. A loop encloses leucine and forms a lid-latch mechanism required for binding. A structure-guided mutation in Sestrin2 that decreases its affinity for leucine leads to a concomitant increase in the leucine concentration required for mTORC1 activation in cells. These results provide a structural mechanism of amino acid sensing by the mTORC1 pathway.


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA 02142, USA. Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, MA 02139, USA. Koch Institute for Integrative Cancer Research, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. Broad Institute of Harvard and MIT, 7 Cambridge Center, Cambridge, MA 02142, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sestrin-2
A, B, C, D, E
480Homo sapiensMutation(s): 0 
Gene Names: SESN2 (Hi95, SEST2)
EC: 1.11.1.15
Find proteins for P58004 (Homo sapiens)
Go to Gene View: SESN2
Go to UniProtKB:  P58004
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LEU
Query on LEU

Download SDF File 
Download CCD File 
A, B, C, D, E
LEUCINE
C6 H13 N O2
ROHFNLRQFUQHCH-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.697 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.196 
  • Space Group: I 2 3
  • Diffraction Data DOI: 
    10.15785/SBGRID/526 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 293.029α = 90.00
b = 293.029β = 90.00
c = 293.029γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer InstituteUnited States(R01CA103866
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI47389
Department of DefenseUnited StatesW81XWH-07-0448

Revision History 

  • Version 1.0: 2015-11-25
    Type: Initial release
  • Version 1.1: 2015-12-02
    Type: Database references
  • Version 1.2: 2016-01-13
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence, Database references, Derived calculations