Macromolecule Content

• Total Structure Weight: 16.37 kDa 
• Atom Count: 1157 
• Residue Count: 148 
• Unique protein chains: 1

1ORM

NMR FOLD OF THE OUTER MEMBRANE PROTEIN OMPX IN DHPC MICELLES

• DOI: 10.2210/pdb1ORM/pdb

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


• Deposited: 2003-03-14 Released: 2003-04-22 
• Deposition Author(s): Fernandez, C., Adeishvili, K., Wuthrich, K.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

TRANSVERSE RELAXATION-OPTIMIZED NMR SPECTROSCOPY WITH THE OUTER MEMBRANE PROTEIN OMPX IN DIHEXANOYL PHOSPHATIDYLCHOLINE MICELLES

FERNANDEZ, C., ADEISHVILI, K., WUTHRICH, K.

(2001) Proc Natl Acad Sci U S A 98: 2358-2363

• PubMed: 11226244 
• DOI: 10.1073/pnas.051629298
• Primary Citation of Related Structures:  
  1ORM


• PubMed Abstract: 
  

The (2)H,(13)C,(15)N-labeled, 148-residue integral membrane protein OmpX from Escherichia coli was reconstituted with dihexanoyl phosphatidylcholine (DHPC) in mixed micelles of molecular mass of about 60 kDa. Transverse relaxation-optimized spectroscopy (TROSY)-type triple resonance NMR experiments and TROSY-type nuclear Overhauser enhancement spectra were recorded in 2 mM aqueous solutions of these mixed micelles at pH 6.8 and 30 degrees C. Complete sequence-specific NMR assignments for the polypeptide backbone thus have been obtained. The (13)C chemical shifts and the nuclear Overhauser effect data then resulted in the identification of the regular secondary structure elements of OmpX/DHPC in solution and in the collection of an input of conformational constraints for the computation of the global fold of the protein. The same type of polypeptide backbone fold is observed in the presently determined solution structure and the previously reported crystal structure of OmpX determined in the presence of the detergent n-octyltetraoxyethylene. Further structure refinement will have to rely on the additional resonance assignment of partially or fully protonated amino acid side chains, but the present data already demonstrate that relaxation-optimized NMR techniques open novel avenues for studies of structure and function of integral membrane proteins.

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Related Citations: 

• SOLUTION NMR STUDIES OF THE INTERGRAL MEMBRANE PROTEINS OMPX AND OMPA FROM ESCHERICHIA COLI
  FERNANDEZ, C., HILTY, C., BONJOUR, S., ADEISHVILI, K., PERVUSHIN, K., WUTHRICH, K.
  (2001) FEBS Lett 504: 173

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Organizational Affiliation: 

Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Hönggerberg, CH-8093 Zurich, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein X	A	148	Escherichia coli	Mutation(s): 1  Gene Names: ompX
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: BETA-BARREL		Sub Group:  Beta-Barrel Membrane Proteins: Monomeric/Dimeric	Protein:  OmpX
Find proteins for P0A917 (Escherichia coli (strain K12)) Explore P0A917  Go to UniProtKB:  P0A917

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 
• OLDERADO: 1ORM Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-03-14 
• Released Date: 2003-04-22 
Deposition Author(s): Fernandez, C., Adeishvili, K., Wuthrich, K.

Revision History 

• Version 1.0: 2003-04-22
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance