Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 72.96 kDa 
• Atom Count: 3186 
• Modelled Residue Count: 638 
• Deposited Residue Count: 638 
• Unique protein chains: 1

3J25

Structural basis for TetM-mediated tetracycline resistance

• PDB DOI: 10.2210/pdb3J25/pdb
• EM Map EMD-2183: EMDB EMDataResource

• Classification: TRANSLATION
• Organism(s): Enterococcus faecalis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-08-22 Released: 2012-10-17 
• Deposition Author(s): Doenhoefer, A., Franckenberg, S., Wickles, S., Berninghausen, O., Beckmann, R., Wilson, D.N.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 7.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for TetM-mediated tetracycline resistance.

Donhofer, A., Franckenberg, S., Wickles, S., Berninghausen, O., Beckmann, R., Wilson, D.N.

(2012) Proc Natl Acad Sci U S A 109: 16900-16905

• PubMed: 23027944 
• DOI: 10.1073/pnas.1208037109
• Primary Citation of Related Structures:  
  3J25


• PubMed Abstract: 
  

Ribosome protection proteins (RPPs) confer tetracycline resistance by binding to the ribosome and chasing the drug from its binding site. The current model for the mechanism of action of RPPs proposes that drug release is indirect and achieved via conformational changes within the drug-binding site induced upon binding of the RPP to the ribosome. Here we report a cryo-EM structure of the RPP TetM in complex with the 70S ribosome at 7.2-Å resolution. The structure reveals the contacts of TetM with the ribosome, including interaction between the conserved and functionally critical C-terminal extension of TetM and the decoding center of the small subunit. Moreover, we observe direct interaction between domain IV of TetM and the tetracycline binding site and identify residues critical for conferring tetracycline resistance. A model is presented whereby TetM directly dislodges tetracycline to confer resistance.

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Organizational Affiliation: 

Gene Center and Department for Biochemistry, University of Munich, 81377 Munich, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tetracycline resistance protein tetM	A	638	Enterococcus faecalis	Mutation(s): 0  Gene Names: tetM, transposon TnFO1, tet(M)
UniProt
Find proteins for Q47810 (Enterococcus faecalis) Explore Q47810  Go to UniProtKB:  Q47810

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GCP	B [auth A]	PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER C11 H18 N5 O13 P3 PHBDHXOBFUBCJD-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 7.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-08-22 
• Released Date: 2012-10-17 
Deposition Author(s): Doenhoefer, A., Franckenberg, S., Wickles, S., Berninghausen, O., Beckmann, R., Wilson, D.N.

Revision History  

• Version 1.0: 2012-10-17
  Type: Initial release
  
• Version 1.1: 2012-10-31
  Changes: Database references
• Version 1.2: 2018-07-18
  Changes: Data collection