2NS8

How an in vitro selected peptide mimics the antibiotic tetracycline to induce TET repressor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

How an agonist peptide mimics the antibiotic tetracycline to induce Tet-repressor

Luckner, S.R.Klotzsche, M.Berens, C.Hillen, W.Muller, Y.A.

(2007) J.Mol.Biol. 368: 780-790

  • DOI: 10.1016/j.jmb.2007.02.030
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A 16-residue peptide, called Tip, induces the tetracycline repressor TetR as efficiently as the antibiotic tetracycline when fused to the N or C terminus of another protein. This is unusual because the majority of in vitro selected peptides, such as ...

    A 16-residue peptide, called Tip, induces the tetracycline repressor TetR as efficiently as the antibiotic tetracycline when fused to the N or C terminus of another protein. This is unusual because the majority of in vitro selected peptides, such as Tip, inhibit protein function, and agonist peptides are only rarely identified. We elucidated the atomic mechanism of TetR induction by Tip from crystal structures of TetR in complex with Tip and of free TetR. Peptide induction ultimately results in the same movements of DNA reading heads, but Tip accomplishes this by very different molecular interactions from tetracycline involving important contacts to the TetR surface. As a direct consequence, an alternate pathway of allostery becomes possible that makes ample use of intersubunit interactions. For the first time it is possible to show in atomic detail how a small molecule controlled bacterial transcription factor such as TetR becomes responsive to protein-protein interactions, characteristic of gene transcription regulation in higher organisms.


    Organizational Affiliation

    Lehrstuhl für Biotechnik, Institut für Biologie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tetracycline repressor protein
A, B, C, D
208Escherichia coliMutation(s): 4 
Gene Names: tetR
Find proteins for P04483 (Escherichia coli)
Go to UniProtKB:  P04483
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
16 residue peptide Tip (Transcription inducing peptide)
H, E, F, G, Z
17N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
E, F, G, H, Z
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.206 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 77.890α = 90.00
b = 200.590β = 90.00
c = 65.280γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection
XSCALEdata scaling
AMoREphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Source and taxonomy, Version format compliance
  • Version 1.3: 2017-08-16
    Type: Refinement description, Source and taxonomy
  • Version 1.4: 2017-08-23
    Type: Source and taxonomy