5LLM

Structure of the thermostabilized EAAT1 cryst mutant in complex with L-ASP and the allosteric inhibitor UCPH101


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and allosteric inhibition of excitatory amino acid transporter 1.

Canul-Tec, J.C.Assal, R.Cirri, E.Legrand, P.Brier, S.Chamot-Rooke, J.Reyes, N.

(2017) Nature 544: 446-451

  • DOI: 10.1038/nature22064
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human members of the solute carrier 1 (SLC1) family of transporters take up excitatory neurotransmitters in the brain and amino acids in peripheral organs. Dysregulation of the function of SLC1 transporters is associated with neurodegenerative disord ...

    Human members of the solute carrier 1 (SLC1) family of transporters take up excitatory neurotransmitters in the brain and amino acids in peripheral organs. Dysregulation of the function of SLC1 transporters is associated with neurodegenerative disorders and cancer. Here we present crystal structures of a thermostabilized human SLC1 transporter, the excitatory amino acid transporter 1 (EAAT1), with and without allosteric and competitive inhibitors bound. The structures reveal architectural features of the human transporters, such as intra- and extracellular domains that have potential roles in transport function, regulation by lipids and post-translational modifications. The coordination of the allosteric inhibitor in the structures and the change in the transporter dynamics measured by hydrogen-deuterium exchange mass spectrometry reveal a mechanism of inhibition, in which the transporter is locked in the outward-facing states of the transport cycle. Our results provide insights into the molecular mechanisms underlying the function and pharmacology of human SLC1 transporters.


    Organizational Affiliation

    Structural Mass Spectrometry and Proteomics Unit, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.,UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.,Molecular Mechanisms of Membrane Transport Laboratory, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.,Synchrotron SOLEIL, L'Orme des Merisiers, 91192 Gif-sur-Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Excitatory amino acid transporter 1,Neutral amino acid transporter B(0),Excitatory amino acid transporter 1
A
522Homo sapiensMutation(s): 72 
Gene Names: SLC1A3 (EAAT1, GLAST, GLAST1), SLC1A5 (ASCT2, M7V1, RDR, RDRC)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Solute Carrier (SLC) Transporter Superfamily
Protein: 
EAAT1 excitatory amino acid transporter 1 in complex with L-Asp and the allosteric inhibitor UCPH101
Find proteins for P43003 (Homo sapiens)
Go to Gene View: SLC1A3
Go to UniProtKB:  P43003
Find proteins for Q15758 (Homo sapiens)
Go to Gene View: SLC1A5
Go to UniProtKB:  Q15758
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
6Z6
Query on 6Z6

Download SDF File 
Download CCD File 
A
2-Amino-5,6,7,8-tetrahydro-4-(4-methoxyphenyl)-7-(naphthalen-1-yl)-5-oxo-4H-chromene-3-carbonitrile
C27 H22 N2 O3
YBMGNDPBARCLFT-YDONVPIESA-N
 Ligand Interaction
ASP
Query on ASP

Download SDF File 
Download CCD File 
A
ASPARTIC ACID
C4 H7 N O4
CKLJMWTZIZZHCS-REOHCLBHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.219 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 123.270α = 90.00
b = 123.270β = 90.00
c = 89.870γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
BUSTERrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
ERC Starting GrantFrance309657

Revision History 

  • Version 1.0: 2017-04-19
    Type: Initial release
  • Version 1.1: 2017-05-03
    Type: Database references
  • Version 1.2: 2017-05-10
    Type: Database references