4CRO

PROTEIN-DNA CONFORMATIONAL CHANGES IN THE CRYSTAL STRUCTURE OF A LAMBDA CRO-OPERATOR COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.9 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Protein-DNA conformational changes in the crystal structure of a lambda Cro-operator complex.

Brennan, R.G.Roderick, S.L.Takeda, Y.Matthews, B.W.

(1990) Proc.Natl.Acad.Sci.USA 87: 8165-8169


  • PubMed Abstract: 
  • The structure of a complex of bacteriophage lambda Cro protein with a 17-base-pair operator has been determined at 3.9-A resolution. Isomorphous derivatives obtained by the synthesis of site-specific iodinated DNA oligomers were of critical importanc ...

    The structure of a complex of bacteriophage lambda Cro protein with a 17-base-pair operator has been determined at 3.9-A resolution. Isomorphous derivatives obtained by the synthesis of site-specific iodinated DNA oligomers were of critical importance in solving the structure. The crystal structure contains three independent Cro-operator complexes that have very similar, although not necessarily identical, conformations. In the complex, the protein dimer undergoes a large conformational change relative to the crystal structure of the free protein. One monomer rotates by about 40 degrees relative to the other, this being accomplished primarily by a twisting of the two beta-sheet strands that connect one monomer with the other. In the complex, the DNA is bent by about 40 degrees into the shape of a boomerang but maintains essentially Watson-Crick B-form. In contrast to other known protein-DNA complexes, the DNA is not stacked end-to-end. The structure confirms the general features of the model previously proposed for the interaction of Cro with DNA.


    Related Citations: 
    • Crystallization of a Complex of Cro Repressor with a 17 Base-Pair Operator
      Brennan, R.G.,Takeda, Y.,Kim, J.,Anderson, W.F.,Matthews, B.W.
      (1986) J.Mol.Biol. 188: 115
    • Structure of the Cro Repressor from Bacteriophage Lambda and its Interaction with DNA
      Anderson, W.F.,Ohlendorf, D.H.,Takeda, Y.,Matthews, B.W.
      (1981) Nature 290: 754


    Organizational Affiliation

    Department of Physics, University of Oregon, Eugene 97403.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (LAMBDA CRO)
A, B, C, D, E, F
66Enterobacteria phage lambdaGene Names: cro
Find proteins for P03040 (Enterobacteria phage lambda)
Go to UniProtKB:  P03040
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*AP*TP*CP*AP*CP*CP*GP*CP*GP*GP*GP*TP*GP*AP*TP*A)-3')G,H,I,J,K,L17N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.9 Å
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 154.800α = 90.00
b = 154.800β = 90.00
c = 86.000γ = 120.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1992-01-15
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance