2OR1

RECOGNITION OF A DNA OPERATOR BY THE REPRESSOR OF PHAGE 434. A VIEW AT HIGH RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Recognition of a DNA operator by the repressor of phage 434: a view at high resolution.

Aggarwal, A.K.Rodgers, D.W.Drottar, M.Ptashne, M.Harrison, S.C.

(1988) Science 242: 899-907


  • PubMed Abstract: 
  • The repressors of temperate bacteriophages such as 434 and lambda control transcription by binding to a set of DNA operator sites. The different affinity of repressor for each of these sites ensures efficient regulation. High-resolution x-ray crystal ...

    The repressors of temperate bacteriophages such as 434 and lambda control transcription by binding to a set of DNA operator sites. The different affinity of repressor for each of these sites ensures efficient regulation. High-resolution x-ray crystallography was used to study the DNA-binding domain of phage 434 repressor in complex with a synthetic DNA operator. The structure shows recognition of the operator by direct interactions with base pairs in the major groove, combined with the sequence-dependent ability of DNA to adopt the required conformation on binding repressor. In particular, a network of three-centered bifurcated hydrogen bonds among base pairs in the operator helps explain why 434 repressor prefers certain sites over others. These bonds, which stabilize the conformation of the bound DNA, can form only with certain sequences.


    Related Citations: 
    • Structure of the Repressor-Operator Complex of Bacteriophage 434
      Anderson, J.E.,Ptashne, M.,Harrison, S.C.
      (1987) Nature 326: 846


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, MA 02138.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
434 REPRESSOR
L, R
69Enterobacteria phage 434Mutation(s): 0 
Gene Names: CI
Find proteins for P16117 (Enterobacteria phage 434)
Go to UniProtKB:  P16117
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*AP*GP*TP*AP*CP*AP*AP*AP*CP*TP*TP*TP*CP*TP*TP*G P*TP*AP*T)-3')A20N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*AP*TP*AP*CP*AP*AP*GP*AP*AP*AP*GP*TP*TP*TP*GP*T P*AP*CP*T)-3')B20N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 148.300α = 90.00
b = 65.000β = 90.00
c = 27.700γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1989-09-05
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance