Biological Assembly 1  

 3D View: Structure | Electron Density

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 50243.96 
• Atom Count: 3403 
• Residue Count: 451 
• Unique protein chains: 1

1PW4

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

• DOI: 10.2210/pdb1PW4/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli


• 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: 3.3 Å
• R-Value Free: 0.325 
• R-Value Work: 0.296 

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: 10.1126/science.1087619


• 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.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Glycerol-3-phosphate transporter	A	451	Escherichia coli (strain K12)	Mutation(s): 0  Gene Names: glpT
Membrane protein mpstruct	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  Major Facilitator Superfamily (MFS) Transporters	Protein:  GlpT Glycerol-3-Phosphate Transporter
Find proteins for P08194 (Escherichia coli (strain K12)) Go to UniProtKB:  P08194

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.3 Å
• R-Value Free: 0.325 
• R-Value Work: 0.296 
• Space Group: P 3₂ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 97.640	α = 90.00
b = 97.640	β = 90.00
c = 175.151	γ = 120.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-06-30 
• 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
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance