1Q9F

NMR STRUCTURE OF THE OUTER MEMBRANE PROTEIN OMPX IN DHPC MICELLES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR structure of the integral membrane protein OmpX.

Fernandez, C.Hilty, C.Wider, G.Guntert, P.Wuthrich, K.

(2004) J.Mol.Biol. 336: 1211-1221

  • DOI: 10.1016/j.jmb.2003.09.014
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the integral membrane protein OmpX from Escherichia coli reconstituted in 60 kDa DHPC micelles (OmpX/DHPC) was calculated from 526 NOE upper limit distance constraints. The structure determination was based on complete sequence-speci ...

    The structure of the integral membrane protein OmpX from Escherichia coli reconstituted in 60 kDa DHPC micelles (OmpX/DHPC) was calculated from 526 NOE upper limit distance constraints. The structure determination was based on complete sequence-specific assignments for the amide protons and the Val, Leu, and Ile(delta1) methyl groups in OmpX, which were selectively protonated on a perdeuterated background. The solution structure of OmpX in the DHPC micelles consists of a well-defined, eight-stranded antiparallel beta-barrel, with successive pairs of beta-strands connected by mobile loops. Several long-range NOEs observed outside of the transmembrane barrel characterize an extension of a four-stranded beta-sheet beyond the height of the barrel. This protruding beta-sheet is believed to be involved in intermolecular interactions responsible for the biological functions of OmpX. The present approach for de novo structure determination should be quite widely applicable to membrane proteins reconstituted in mixed micelles with overall molecular masses up to about 100 kDa, and may also provide a platform for additional functional studies.


    Related Citations: 
    • Stereospecific assignments of the isopropyl methyl groups of the membrane protein OmpX in DHPC micelles
      Hilty, C.,Wider, G.,Fernandez, C.,Wuthrich, K.
      () TO BE PUBLISHED --: --
    • Side chain NMR assignments in the membrane protein OmpX reconstituted in DHPC micelles
      Hilty, C.,Fernandez, C.,Wider, G.,Wuthrich, K.
      (2002) J.Biomol.NMR 23: 289


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Outer membrane protein X
A
148Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: ompX (ybiG)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Beta-Barrel Membrane Proteins: Monomeric/Dimeric
Protein: 
OmpX
Find proteins for P0A917 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A917
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • Olderado: 1Q9F Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-23
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance