1G90

NMR Solution Structure of Outer Membrane Protein A Transmembrane Domain: 10 conformers

• PDB DOI:  https://doi.org/10.2210/pdb1G90/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTMMemProtMD


• Deposited: 2000-11-21 Released: 2001-04-21 
• Deposition Author(s): Arora, A., Abildgaard, F., Bushweller, J.H., Tamm, L.K.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: all calculated structures submitted 

Literature

Structure of outer membrane protein A transmembrane domain by NMR spectroscopy

Arora, A., Abildgaard, F., Bushweller, J.H., Tamm, L.K.

(2001) Nat Struct Biol 8: 334-338

• PubMed: 11276254 
• DOI: https://doi.org/10.1038/86214
• Primary Citation of Related Structures:  
  1G90


• PubMed Abstract: 
  

  We have determined the three-dimensional fold of the 19 kDa (177 residues) transmembrane domain of the outer membrane protein A of Escherichia coli in dodecylphosphocholine (DPC) micelles in solution using heteronuclear NMR. The structure consists of an eight-stranded beta-barrel connected by tight turns on the periplasmic side and larger mobile loops on the extracellular side. The solution structure of the barrel in DPC micelles is similar to that in n-octyltetraoxyethylene (C(8)E(4)) micelles determined by X-ray diffraction. Moreover, data from NMR dynamic experiments reveal a gradient of conformational flexibility in the structure that may contribute to the membrane channel function of this protein.

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Organizational Affiliation: 

Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia 22908-0736, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19.06 kDa 
• Atom Count: 1,347 
• Modelled Residue Count: 176 
• Deposited Residue Count: 176 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
OUTER MEMBRANE PROTEIN A	A	176	Escherichia coli	Mutation(s): 4  Gene Names: ompA Membrane Entity: Yes
UniProt
Find proteins for P0A910 (Escherichia coli (strain K12)) Explore P0A910  Go to UniProtKB:  P0A910

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: all calculated structures submitted 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-04-21 
Deposition Author(s): Arora, A., Abildgaard, F., Bushweller, J.H., Tamm, L.K.

Revision History  

• Version 1.0: 2001-04-21
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-27
  Changes: Database references, Derived calculations