6RVY

Inward-open structure of the ASCT2 (SLC1A5) mutant C467R in absence of substrate


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.13 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

A one-gate elevator mechanism for the human neutral amino acid transporter ASCT2.

Garaeva, A.A.Guskov, A.Slotboom, D.J.Paulino, C.

(2019) Nat Commun 10: 3427-3427

  • DOI: 10.1038/s41467-019-11363-x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The human Alanine Serine Cysteine Transporter 2 (ASCT2) is a neutral amino acid exchanger that belongs to the solute carrier family 1 (SLC1A). SLC1A structures have revealed an elevator-type mechanism, in which the substrate is translocated across th ...

    The human Alanine Serine Cysteine Transporter 2 (ASCT2) is a neutral amino acid exchanger that belongs to the solute carrier family 1 (SLC1A). SLC1A structures have revealed an elevator-type mechanism, in which the substrate is translocated across the cell membrane by a large displacement of the transport domain, whereas a small movement of hairpin 2 (HP2) gates the extracellular access to the substrate-binding site. However, it has remained unclear how substrate binding and release is gated on the cytoplasmic side. Here, we present an inward-open structure of the human ASCT2, revealing a hitherto elusive SLC1A conformation. Strikingly, the same structural element (HP2) serves as a gate in the inward-facing as in the outward-facing state. The structures reveal that SLC1A transporters work as one-gate elevators. Unassigned densities near the gate and surrounding the scaffold domain, may represent potential allosteric binding sites, which could guide the design of lipidic-inhibitors for anticancer therapy.


    Organizational Affiliation

    Membrane Enzymology, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands. c.paulino@rug.nl.,Structural Biology, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands. c.paulino@rug.nl.,Membrane Enzymology, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands.,Membrane Enzymology, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands. d.j.slotboom@rug.nl.,Structural Biology, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands.,University of Groningen, Zernike Institute for Advanced Materials, Groningen, The Netherlands. d.j.slotboom@rug.nl.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neutral amino acid transporter B(0)
A, B, C
547Homo sapiensMutation(s): 1 
Gene Names: SLC1A5 (ASCT2, M7V1, RDR, RDRC)
Find proteins for Q15758 (Homo sapiens)
Go to Gene View: SLC1A5
Go to UniProtKB:  Q15758
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.13 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
Netherlands Organisation for Scientific ResearchNetherlands723.014.002
Netherlands Organisation for Scientific ResearchNetherlands865.11.001
European Research CouncilNetherlands282083
Netherlands Organisation for Scientific ResearchNetherlands722.017.001
Netherlands Organisation for Scientific ResearchNetherlands740.018.016

Revision History 

  • Version 1.0: 2019-08-07
    Type: Initial release
  • Version 1.1: 2019-08-14
    Type: Data collection, Database references
  • Version 1.2: 2019-12-18
    Type: Other