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 
  • R-Value Observed: 0.220 

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Ligand Structure Quality Assessment 


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:  
    5LLM, 5LLU, 5LM4, 5MJU

  • 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 disorders and cancer ...

    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

    UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Excitatory amino acid transporter 1,Neutral amino acid transporter B(0),Excitatory amino acid transporter 1A522Homo sapiensMutation(s): 72 
Gene Names: SLC1A3EAAT1GLASTGLAST1SLC1A5ASCT2M7V1RDRRDRC
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q15758 (Homo sapiens)
Explore Q15758 
Go to UniProtKB:  Q15758
PHAROS:  Q15758
Find proteins for P43003 (Homo sapiens)
Explore P43003 
Go to UniProtKB:  P43003
PHAROS:  P43003
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP43003Q15758
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6Z6
Query on 6Z6

Download Ideal Coordinates CCD File 
D [auth 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 Ideal Coordinates CCD File 
C [auth A]ASPARTIC ACID
C4 H7 N O4
CKLJMWTZIZZHCS-REOHCLBHSA-N
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
B [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-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 
  • R-Value Observed: 0.220 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.27α = 90
b = 123.27β = 90
c = 89.87γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
ERC Starting GrantFrance309657

Revision History  (Full details and data files)

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