1QJP

HIGH RESOLUTION STRUCTURE OF THE OUTER MEMBRANE PROTEIN A (OMPA) TRANSMEMBRANE DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.155 

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This is version 1.5 of the entry. See complete history


Literature

High Resolution Structure of the Ompa Membrane Domain

Pautsch, A.Schulz, G.E.

(2000) J Mol Biol 298: 273

  • DOI: 10.1006/jmbi.2000.3671
  • Primary Citation of Related Structures:  
    1QJP

  • PubMed Abstract: 
  • The membrane domain of OmpA consists of an eight-stranded all-next-neighbor antiparallel beta-barrel with short turns at the periplasmic barrel end and long flexible loops at the external end. The structure analysis has been extended from medium resolution to 1 ...

    The membrane domain of OmpA consists of an eight-stranded all-next-neighbor antiparallel beta-barrel with short turns at the periplasmic barrel end and long flexible loops at the external end. The structure analysis has been extended from medium resolution to 1. 65 A (1 A=0.1 nm), and the molecular model has been refined anisotropically to show oriented mobilities of the structural elements. The improved data allowed us to locate five further detergent molecules and 11 more water molecules. Moreover, the two large non-polar packing contacts have now been defined in detail. The analysis indicates that the beta-barrel constitutes a solid scaffold such that the long external loops need not contribute to stability. These loops are highly mobile and thus cause a major problem during the crystallization process. The beta-barrel was related to those of lipocalins. Two further crystal forms with exceptionally dense packing arrangements were established at medium resolution.


    Related Citations: 
    • Structure of the Outer Membrane Protein a Transmembrane Domain
      Pautsch, A., Schulz, G.E.
      (1998) Nat Struct Biol 5: 1013

    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Albertstrasse 21, Freiburg im Breisgau, D-79104, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
OUTER MEMBRANE PROTEIN AA171Escherichia coli BL21(DE3)Mutation(s): 3 
Gene Names: ompA
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Beta-Barrel Membrane Proteins: Monomeric/Dimeric
Protein: 
OmpA
Find proteins for P0A910 (Escherichia coli (strain K12))
Explore P0A910 
Go to UniProtKB:  P0A910
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.155 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.1α = 90
b = 79.7β = 94.3
c = 50.2γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-10-24
    Changes: Advisory, Data collection, Source and taxonomy
  • Version 1.4: 2019-07-10
    Changes: Data collection
  • Version 1.5: 2019-07-24
    Changes: Data collection