1TRR

TANDEM BINDING IN CRYSTALS OF A TRP REPRESSOR/OPERATOR HALF-SITE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.241 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Tandem binding in crystals of a trp repressor/operator half-site complex.

Lawson, C.L.Carey, J.

(1993) Nature 366: 178-182

  • DOI: 10.1038/366178a0

  • PubMed Abstract: 
  • The crystal structure of trp repressor tandemly bound in a 2:1 complex to a 16-base-pair palindromic DNA containing a central trp operator half-site has been determined and refined to 2.4 A resolution. Despite dramatically different DNA sequence cont ...

    The crystal structure of trp repressor tandemly bound in a 2:1 complex to a 16-base-pair palindromic DNA containing a central trp operator half-site has been determined and refined to 2.4 A resolution. Despite dramatically different DNA sequence contexts and crystallization conditions, the protein/DNA interface is essentially identical to that seen in the original trp repressor/operator complex structure. Water-mediated sequence recognition by trp repressor is likely to be related to the unusual end-on approach of the recognition helix (E), which allows sharing of the major groove by tandem dimers. The tandem complex model accounts for the mutational sensitivity of all trp operator base pairs. The structure also provides the first detailed view of the tandem interaction, revealing a key role for the amino-terminal arms.


    Related Citations: 
    • Cocrystals of E. Coli Trp Repressor Bound to an Alternative Operator DNA Sequence
      Carey, J.,Combatti, N.,Lewis, D.E.A.,Lawson, C.L.
      (1993) J.Mol.Biol. 234: 496


    Organizational Affiliation

    Biology Department, Brookhaven National Laboratory, Upton, New York 11973.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (TRP REPRESSOR)
A, B, D, E, G, H, J, K
107Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: trpR (rtrY)
Find proteins for P0A881 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A881
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*GP*CP*GP*TP*AP*CP*TP*AP*GP*TP*AP*CP*GP*CP*T)-3')C,F,I,L16N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRP
Query on TRP

Download SDF File 
Download CCD File 
A, D, E, G, H, J, K
TRYPTOPHAN
C11 H12 N2 O2
QIVBCDIJIAJPQS-VIFPVBQESA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.241 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 112.340α = 90.00
b = 90.160β = 113.92
c = 58.650γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-21
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-18
    Type: Data collection