6GCT

cryo-EM structure of the human neutral amino acid transporter ASCT2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.85 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Cryo-EM structure of the human neutral amino acid transporter ASCT2.

Garaeva, A.A.Oostergetel, G.T.Gati, C.Guskov, A.Paulino, C.Slotboom, D.J.

(2018) Nat. Struct. Mol. Biol. 25: 515-521

  • DOI: 10.1038/s41594-018-0076-y

  • PubMed Abstract: 
  • Human ASCT2 belongs to the SLC1 family of secondary transporters and is specific for the transport of small neutral amino acids. ASCT2 is upregulated in cancer cells and serves as the receptor for many retroviruses; hence, it has importance as a pote ...

    Human ASCT2 belongs to the SLC1 family of secondary transporters and is specific for the transport of small neutral amino acids. ASCT2 is upregulated in cancer cells and serves as the receptor for many retroviruses; hence, it has importance as a potential drug target. Here we used single-particle cryo-EM to determine a structure of the functional and unmodified human ASCT2 at 3.85-Å resolution. ASCT2 forms a homotrimeric complex in which each subunit contains a transport and a scaffold domain. Prominent extracellular extensions on the scaffold domain form the predicted docking site for retroviruses. Relative to structures of other SLC1 members, ASCT2 is in the most extreme inward-oriented state, with the transport domain largely detached from the central scaffold domain on the cytoplasmic side. This domain detachment may be required for substrate binding and release on the intracellular side of the membrane.


    Organizational Affiliation

    University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Structural Biology, Groningen, the Netherlands.,SLAC National Accelerator Laboratory, Bioscience Division, Menlo Park, CA, USA.,University of Groningen, Zernike Institute for Advanced Materials, Groningen, the Netherlands. d.j.slotboom@rug.nl.,University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Structural Biology, Groningen, the Netherlands. a.guskov@rug.nl.,University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Membrane Enzymology, Groningen, the Netherlands.,University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Membrane Enzymology, Groningen, the Netherlands. d.j.slotboom@rug.nl.,Stanford University, Department of Structural Biology, Stanford, CA, USA.,University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Structural Biology, Groningen, the Netherlands. c.paulino@rug.nl.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neutral amino acid transporter B(0)
A, B, C
541Homo sapiensMutation(s): 0 
Gene Names: SLC1A5 (ASCT2, M7V1, RDR, RDRC)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Solute Carrier (SLC) Transporter Superfamily
Protein: 
Neutral amino acid transporter ASCT2, inward-oriented state
Find proteins for Q15758 (Homo sapiens)
Go to Gene View: SLC1A5
Go to UniProtKB:  Q15758
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLN
Query on GLN

Download SDF File 
Download CCD File 
A, B, C
GLUTAMINE
C5 H10 N2 O3
ZDXPYRJPNDTMRX-VKHMYHEASA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.85 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
NetherlandsNWO Vidi 723.014.002
NetherlandsNWO Veni 722.017.001
European CommissionNetherlandsMSCI 749732
European CommissionNetherlandsERC 282083
NetherlandsNWO Vici 865.11.001

Revision History 

  • Version 1.0: 2018-06-13
    Type: Initial release
  • Version 1.1: 2018-06-20
    Type: Data collection, Database references
  • Version 1.2: 2019-12-11
    Type: Other