2A65

Crystal structure of LEUTAA, a bacterial homolog of Na+/Cl--dependent neurotransmitter transporters


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.199 

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This is version 1.4 of the entry. See complete history


Literature

Crystal structure of a bacterial homologue of Na(+)/Cl(-)-dependent neurotransmitter transporters.

Yamashita, A.Singh, S.K.Kawate, T.Jin, Y.Gouaux, E.

(2005) Nature 437: 215-223

  • DOI: https://doi.org/10.1038/nature03978
  • Primary Citation of Related Structures:  
    2A65

  • PubMed Abstract: 

    Na+/Cl--dependent transporters terminate synaptic transmission by using electrochemical gradients to drive the uptake of neurotransmitters, including the biogenic amines, from the synapse to the cytoplasm of neurons and glia. These transporters are the targets of therapeutic and illicit compounds, and their dysfunction has been implicated in multiple diseases of the nervous system. Here we present the crystal structure of a bacterial homologue of these transporters from Aquifex aeolicus, in complex with its substrate, leucine, and two sodium ions. The protein core consists of the first ten of twelve transmembrane segments, with segments 1-5 related to 6-10 by a pseudo-two-fold axis in the membrane plane. Leucine and the sodium ions are bound within the protein core, halfway across the membrane bilayer, in an occluded site devoid of water. The leucine and ion binding sites are defined by partially unwound transmembrane helices, with main-chain atoms and helix dipoles having key roles in substrate and ion binding. The structure reveals the architecture of this important class of transporter, illuminates the determinants of substrate binding and ion selectivity, and defines the external and internal gates.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics and.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Na(+):neurotransmitter symporter (Snf family)519Aquifex aeolicus VF5Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for O67854 (Aquifex aeolicus (strain VF5))
Explore O67854 
Go to UniProtKB:  O67854
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO67854
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
BOG
Query on BOG

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B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A]
octyl beta-D-glucopyranoside
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
LEU
Query on LEU

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J [auth A]LEUCINE
C6 H13 N O2
ROHFNLRQFUQHCH-YFKPBYRVSA-N
CL
Query on CL

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I [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA
Query on NA

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G [auth A],
H [auth A]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.86α = 90
b = 86.31β = 95.73
c = 81.02γ = 90
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-08-02
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Structure summary