Macromolecule Content

• Total Structure Weight: 19.19 kDa 
• Atom Count: 1354 
• Residue Count: 177 
• Unique protein chains: 1

2GE4

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

• DOI: 10.2210/pdb2GE4/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2006-03-17 Released: 2006-04-11 
• Deposition Author(s): Cierpicki, T., Liang, B., Tamm, L.K., Bushweller, J.H.

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Experimental Data Snapshot

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

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

• PubMed: 16719475 
• DOI: 10.1021/ja0608343
• Primary Citation of Related Structures:  
  2GE4


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein A	A	177	Escherichia coli	Mutation(s): 4  Gene Names: ompA, con, tolG, tut
Find proteins for P0A910 (Escherichia coli (strain K12)) Explore P0A910  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

Entry History 

Deposition Data

• Deposited Date: 2006-03-17 
• Released Date: 2006-04-11 
Deposition Author(s): Cierpicki, T., Liang, B., Tamm, L.K., Bushweller, J.H.

Revision History 

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