3USG

Crystal structure of LeuT bound to L-leucine in space group C2 from lipid bicelles


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structures of LeuT in bicelles define conformation and substrate binding in a membrane-like context.

Wang, H.Elferich, J.Gouaux, E.

(2012) Nat Struct Mol Biol 19: 212-219

  • DOI: https://doi.org/10.1038/nsmb.2215
  • Primary Citation of Related Structures:  
    3USG, 3USI, 3USJ, 3USK, 3USL, 3USM, 3USO, 3USP

  • PubMed Abstract: 

    Neurotransmitter sodium symporters (NSSs) catalyze the uptake of neurotransmitters into cells, terminating neurotransmission at chemical synapses. Consistent with the role of NSSs in the central nervous system, they are implicated in multiple diseases and disorders. LeuT, from Aquifex aeolicus, is a prokaryotic ortholog of the NSS family and has contributed to our understanding of the structure, mechanism and pharmacology of NSSs. At present, however, the functional state of LeuT in crystals grown in the presence of n-octyl-β-D-glucopyranoside (β-OG) and the number of substrate binding sites are controversial issues. Here we present crystal structures of LeuT grown in DMPC-CHAPSO bicelles and demonstrate that the conformations of LeuT-substrate complexes in lipid bicelles and in β-OG detergent micelles are nearly identical. Furthermore, using crystals grown in bicelles and the substrate leucine or the substrate analog selenomethionine, we find only a single substrate molecule in the primary binding site.


  • Organizational Affiliation

    Vollum Institute, Oregon Health & Science University, Portland, Oregon, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transporter519Aquifex aeolicusMutation(s): 0 
Gene Names: snfaq_2077
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
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PC
Query on PC

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G [auth A]PHOSPHOCHOLINE
C5 H15 N O4 P
YHHSONZFOIEMCP-UHFFFAOYSA-O
UND
Query on UND

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F [auth A]UNDECANE
C11 H24
RSJKGSCJYJTIGS-UHFFFAOYSA-N
LEU
Query on LEU

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B [auth A]LEUCINE
C6 H13 N O2
ROHFNLRQFUQHCH-YFKPBYRVSA-N
PEG
Query on PEG

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E [auth A]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
ACT
Query on ACT

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D [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
NA
Query on NA

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.814α = 90
b = 90.859β = 103.78
c = 81.645γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-11
    Type: Initial release
  • Version 1.1: 2012-02-29
    Changes: Database references
  • Version 1.2: 2013-11-20
    Changes: Other
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description