5MWV

Solid-state NMR Structure of outer membrane protein G in lipid bilayers

• PDB DOI: https://doi.org/10.2210/pdb5MWV/pdb
• BMRB: 34088

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  PDBTMMemProtMD


• Deposited: 2017-01-20 Released: 2017-12-27 
• Deposition Author(s): Retel, J.S., Nieuwkoop, A.J., Hiller, M., Higman, V.A., Barbet-Massin, E., Stanek, J., Andreas, L.B., Franks, W.T., van Rossum, B.-J., Vinothkumar, K.R., Handel, L., de Palma, G.G., Bardiaux, B., Pintacuda, G., Emsley, L., Kuelbrandt, W., Oschkinat, H.
• Funding Organization(s): European Union, German Research Foundation

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Experimental Data Snapshot

• Method: SOLID-STATE NMR
• Conformers Calculated: 200 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of outer membrane protein G in lipid bilayers.

Retel, J.S., Nieuwkoop, A.J., Hiller, M., Higman, V.A., Barbet-Massin, E., Stanek, J., Andreas, L.B., Franks, W.T., van Rossum, B.J., Vinothkumar, K.R., Handel, L., de Palma, G.G., Bardiaux, B., Pintacuda, G., Emsley, L., Kuhlbrandt, W., Oschkinat, H.

(2017) Nat Commun 8: 2073-2073

• PubMed: 29233991 
• DOI: https://doi.org/10.1038/s41467-017-02228-2
• Primary Citation of Related Structures:  
  5MWV


• PubMed Abstract: 
  

  β-barrel proteins mediate nutrient uptake in bacteria and serve vital functions in cell signaling and adhesion. For the 14-strand outer membrane protein G of Escherichia coli, opening and closing is pH-dependent. Different roles of the extracellular loops in this process were proposed, and X-ray and solution NMR studies were divergent. Here, we report the structure of outer membrane protein G investigated in bilayers of E. coli lipid extracts by magic-angle-spinning NMR. In total, 1847 inter-residue ¹ H- ¹ H and ¹³ C- ¹³ C distance restraints, 256 torsion angles, but no hydrogen bond restraints are used to calculate the structure. The length of β-strands is found to vary beyond the membrane boundary, with strands 6-8 being the longest and the extracellular loops 3 and 4 well ordered. The site of barrel closure at strands 1 and 14 is more disordered than most remaining strands, with the flexibility decreasing toward loops 3 and 4. Loop 4 presents a well-defined helix.

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Organizational Affiliation: 

Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Strasse 10, 13125, Berlin, Germany.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 32.94 kDa 
• Atom Count: 2,336 
• Modelled Residue Count: 281 
• Deposited Residue Count: 281 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein G	A	281	Escherichia coli K-12	Mutation(s): 0  Gene Names: ompG, b1319, JW1312 Membrane Entity: Yes
UniProt
Find proteins for P76045 (Escherichia coli (strain K12)) Explore P76045  Go to UniProtKB:  P76045

Experimental Data & Validation

Experimental Data

• Method: SOLID-STATE NMR
• Conformers Calculated: 200 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2017-12-27 
Deposition Author(s): Retel, J.S., Nieuwkoop, A.J., Hiller, M., Higman, V.A., Barbet-Massin, E., Stanek, J., Andreas, L.B., Franks, W.T., van Rossum, B.-J., Vinothkumar, K.R., Handel, L., de Palma, G.G., Bardiaux, B., Pintacuda, G., Emsley, L., Kuelbrandt, W., Oschkinat, H.

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Funding Organization	Location	Grant Number
European Union	Germany	BioNMR / 261863
European Union		iNext / GA 653706
German Research Foundation	Germany	SFB 740
German Research Foundation	Germany	OS106/9

Revision History  

• Version 1.0: 2017-12-27
  Type: Initial release
  
• Version 1.1: 2019-08-21
  Changes: Data collection