2GE4

High-resolution solution structure of outer membrane protein A transmembrane domain

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.2 of the entry. See complete history. 

Literature

Increasing the accuracy of solution NMR structures of membrane proteins by application of residual dipolar couplings. High-resolution structure of outer membrane protein A.

Cierpicki, T., Liang, B., Tamm, L.K., Bushweller, J.H.

(2006) J.Am.Chem.Soc. 128: 6947-6951

  • DOI: 10.1021/ja0608343

  • PubMed Abstract: 

    • The structure determination of membrane proteins is one of the most challenging applications of solution NMR spectroscopy. The paucity of distance information available from the highly deuterated proteins employed requires new approaches in structure ...

    The structure determination of membrane proteins is one of the most challenging applications of solution NMR spectroscopy. The paucity of distance information available from the highly deuterated proteins employed requires new approaches in structure determination. Here we demonstrate that significant improvement in the structure accuracy of the membrane protein OmpA can be achieved by refinement with residual dipolar couplings (RDCs). The application of charged polyacrylamide gels allowed us to obtain two alignments and accurately measure numerous heteronuclear dipolar couplings. Furthermore, we have demonstrated that using a large set of RDCs in the refinement can yield a structure with 1 A rms deviation to the backbone of the high-resolution crystal structure. Our simulations with various data sets indicate that dipolar couplings will be critical for obtaining accurate structures of membrane proteins.

    Organizational Affiliation: 

    Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA 22908, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Outer membrane protein A
A
177Escherichia coli (strain K12)Mutation(s): 4 
Gene Names: ompA (con, tolG, tut)
Membrane protein
mpstruct		Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL		Sub Group: 
Beta-Barrel Membrane Proteins: Monomeric/Dimeric		Protein: 
OmpA
Find proteins for P0A910 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A910
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2GE4 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-11
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance