Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 27.12 kDa 
• Atom Count: 1920 
• Residue Count: 238 
• Unique protein chains: 1

2MLH

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

• DOI: 10.2210/pdb2MLH/pdb
• BMRB: 19343

• Classification: MEMBRANE PROTEIN
• Organism(s): Neisseria gonorrhoeae
• Expression System: Neisseria gonorrhoeae
• Mutation(s): No 


• Deposited: 2014-02-27 Released: 2014-06-25 
• Deposition Author(s): Fox, D.A., Larsson, P., Lo, R.H., Kroncke, B.M., Kasson, P.M., Columbus, L.

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Experimental Data Snapshot

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

Literature

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

• PubMed: 24813921 
• DOI: 10.1021/ja503093y
• Primary Citation of Related Structures:  
  2MLH, 2MAF


• 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Opacity protein opA60	A	238	Neisseria gonorrhoeae	Mutation(s): 0  Gene Names: opaH
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: BETA-BARREL		Sub Group:  Beta-Barrel Membrane Proteins: Monomeric/Dimeric	Protein:  Opa60 for receptor-mediated engulfment, EXPLOR refined
Find proteins for Q04884 (Neisseria gonorrhoeae) Explore Q04884  Go to UniProtKB:  Q04884

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 400 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2MLH Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-02-27 
• Released Date: 2014-06-25 
Deposition Author(s): Fox, D.A., Larsson, P., Lo, R.H., Kroncke, B.M., Kasson, P.M., Columbus, L.

Revision History 

• Version 1.0: 2014-06-25
  Type: Initial release
  
• Version 1.1: 2014-07-30
  Changes: Database references