2GFP

Structure of the Multidrug Transporter EmrD from Escherichia coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.350 
  • R-Value Work: 0.270 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the multidrug transporter EmrD from Escherichia coli

Yin, Y.He, X.Szewczyk, P.Nguyen, T.Chang, G.

(2006) Science 312: 741-744

  • DOI: 10.1126/science.1125629

  • PubMed Abstract: 
  • EmrD is a multidrug transporter from the Major Facilitator Superfamily that expels amphipathic compounds across the inner membrane of Escherichia coli. Here, we report the x-ray structure of EmrD determined to a resolution of 3.5 angstroms. The struc ...

    EmrD is a multidrug transporter from the Major Facilitator Superfamily that expels amphipathic compounds across the inner membrane of Escherichia coli. Here, we report the x-ray structure of EmrD determined to a resolution of 3.5 angstroms. The structure reveals an interior that is composed mostly of hydrophobic residues, which is consistent with its role transporting amphipathic molecules. Two long loops extend into the inner leaflet side of the cell membrane. This region can serve to recognize and bind substrate directly from the lipid bilayer. We propose that multisubstrate specificity, binding, and transport are facilitated by these loop regions and the internal cavity.


    Organizational Affiliation

    Scripps Research Institute, Department of Molecular Biology, 10550 North Torrey Pines Road, CB-105, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Multidrug resistance protein D
A, B
375Escherichia coli (strain K12)Gene Names: emrD (yicQ)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Major Facilitator Superfamily (MFS) Transporters
Protein: 
EmrD Multidrug Transporter
Find proteins for P31442 (Escherichia coli (strain K12))
Go to UniProtKB:  P31442
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.350 
  • R-Value Work: 0.270 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 137.500α = 90.00
b = 124.500β = 110.20
c = 109.400γ = 90.00
Software Package:
Software NamePurpose
PHASESphasing
X-PLORrefinement
HKL-2000data scaling
HKL-2000data reduction
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-16
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance