1PW4

Crystal Structure of the Glycerol-3-Phosphate Transporter from E.Coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.296 

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This is version 1.2 of the entry. See complete history


Literature

Structure and Mechanism of the Glycerol-3-Phosphate Transporter from Escherichia Coli

Huang, Y.Lemieux, M.J.Song, J.Auer, M.Wang, D.N.

(2003) Science 301: 616-620

  • DOI: 10.1126/science.1087619
  • Primary Citation of Related Structures:  
    1PW4

  • PubMed Abstract: 
  • The major facilitator superfamily represents the largest group of secondary membrane transporters in the cell. Here we report the 3.3 angstrom resolution structure of a member of this superfamily, GlpT, which transports glycerol-3-phosphate into the cytoplasm and inorganic phosphate into the periplasm ...

    The major facilitator superfamily represents the largest group of secondary membrane transporters in the cell. Here we report the 3.3 angstrom resolution structure of a member of this superfamily, GlpT, which transports glycerol-3-phosphate into the cytoplasm and inorganic phosphate into the periplasm. The amino- and carboxyl-terminal halves of the protein exhibit a pseudo two-fold symmetry. Closed off to the periplasm, a centrally located substrate-translocation pore contains two arginines at its closed end, which comprise the substrate-binding site. Upon substrate binding, the protein adopts a more compact conformation. We propose that GlpT operates by a single-binding site, alternating-access mechanism through a rocker-switch type of movement.


    Organizational Affiliation

    Skirball Institute of Biomolecular Medicine and Department of Cell Biology, New York University School of Medicine, 540 First Avenue, New York, NY 10016, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glycerol-3-phosphate transporterA451Escherichia coliMutation(s): 0 
Gene Names: glpT
Membrane Entity: Yes 
UniProt
Find proteins for P08194 (Escherichia coli (strain K12))
Explore P08194 
Go to UniProtKB:  P08194
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.296 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.64α = 90
b = 97.64β = 90
c = 175.151γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance