1PW4 | pdb_00001pw4

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

• PDB DOI: https://doi.org/10.2210/pdb1PW4/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2003-06-30 Released: 2003-08-05 
• Deposition Author(s): Huang, Y., Lemieux, M.J., Song, J., Auer, M., Wang, D.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 
  0.325 (Depositor), 0.330 (DCC) 
• R-Value Work: 
  0.296 (Depositor), 0.310 (DCC) 

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

• PubMed: 12893936 
• DOI: https://doi.org/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 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.

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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.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 50.24 kDa 
• Atom Count: 3,403 
• Modeled Residue Count: 434 
• Deposited Residue Count: 451 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycerol-3-phosphate transporter	A	451	Escherichia coli	Mutation(s): 0  Gene Names: glpT Membrane Entity: Yes
UniProt
Find proteins for P08194 (Escherichia coli (strain K12)) Explore P08194  Go to UniProtKB:  P08194

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free:  0.325 (Depositor), 0.330 (DCC) 
• R-Value Work:  0.296 (Depositor), 0.310 (DCC) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 97.64	α = 90
b = 97.64	β = 90
c = 175.151	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
CNS	refinement
HKL-2000	data reduction
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-08-05 
Deposition Author(s): Huang, Y., Lemieux, M.J., Song, J., Auer, M., Wang, D.N.

Revision History  

• 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
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references