NMR Solution Structure of Opa60 from N. Gonorrhoeae in FC-12 Micelles

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.2 of the entry. See complete history


Structure of the neisserial outer membrane protein opa60: loop flexibility essential to receptor recognition and bacterial engulfment.

Fox, D.A.Larsson, P.Lo, R.H.Kroncke, B.M.Kasson, P.M.Columbus, L.

(2014) J Am Chem Soc 136: 9938-9946

  • DOI: https://doi.org/10.1021/ja503093y
  • Primary Citation of Related Structures:  
    2MAF, 2MLH

  • PubMed Abstract: 

    The structure and dynamics of Opa proteins, which we report herein, are responsible for the receptor-mediated engulfment of Neisseria gonorrheae or Neisseria meningitidis by human cells and can offer deep understanding into the molecular recognition of pathogen-host receptor interactions. Such interactions are vital to understanding bacterial pathogenesis as well as the mechanism of foreign body entry to a human cell, which may provide insights for the development of targeted pharmaceutical delivery systems. The size and dynamics of the extracellular loops of Opa60 required a hybrid refinement approach wherein membrane and distance restraints were used to generate an initial NMR structural ensemble, which was then further refined using molecular dynamics in a DMPC bilayer. The resulting ensemble revealed that the extracellular loops, which bind host receptors, occupy compact conformations, interact with each other weakly, and are dynamic on the nanosecond time scale. We predict that this conformational sampling is critical for enabling diverse Opa loop sequences to engage a common set of receptors.

  • Organizational Affiliation

    Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Opacity protein opA60238Neisseria gonorrhoeaeMutation(s): 0 
Gene Names: opaH
Membrane Entity: Yes 
Find proteins for Q04884 (Neisseria gonorrhoeae)
Explore Q04884 
Go to UniProtKB:  Q04884
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04884
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-07-30
    Changes: Database references
  • Version 1.2: 2023-06-14
    Changes: Data collection, Database references, Other