1Z1G

Crystal structure of a lambda integrase tetramer bound to a Holliday junction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.4 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A structural basis for allosteric control of DNA recombination by lambda integrase.

Biswas, T.Aihara, H.Radman-Livaja, M.Filman, D.Landy, A.Ellenberger, T.

(2005) Nature 435: 1059-1066

  • DOI: 10.1038/nature03657
  • Primary Citation of Related Structures:  1Z19, 1Z1B

  • PubMed Abstract: 
  • Site-specific DNA recombination is important for basic cellular functions including viral integration, control of gene expression, production of genetic diversity and segregation of newly replicated chromosomes, and is used by bacteriophage lambda to ...

    Site-specific DNA recombination is important for basic cellular functions including viral integration, control of gene expression, production of genetic diversity and segregation of newly replicated chromosomes, and is used by bacteriophage lambda to integrate or excise its genome into and out of the host chromosome. lambda recombination is carried out by the bacteriophage-encoded integrase protein (lambda-int) together with accessory DNA sites and associated bending proteins that allow regulation in response to cell physiology. Here we report the crystal structures of lambda-int in higher-order complexes with substrates and regulatory DNAs representing different intermediates along the reaction pathway. The structures show how the simultaneous binding of two separate domains of lambda-int to DNA facilitates synapsis and can specify the order of DNA strand cleavage and exchange. An intertwined layer of amino-terminal domains bound to accessory (arm) DNAs shapes the recombination complex in a way that suggests how arm binding shifts the reaction equilibrium in favour of recombinant products.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Integrase
A, B, C, D
356Enterobacteria phage lambdaGene Names: int
EC: 3.1.-.-, 2.7.7.-
Find proteins for P03700 (Enterobacteria phage lambda)
Go to UniProtKB:  P03700
Entity ID: 1
MoleculeChainsLengthOrganism
29-MERI29N/A
Entity ID: 2
MoleculeChainsLengthOrganism
29-MERJ29N/A
Entity ID: 3
MoleculeChainsLengthOrganism
29-MERK29N/A
Entity ID: 4
MoleculeChainsLengthOrganism
29-MERL29N/A
Entity ID: 5
MoleculeChainsLengthOrganism
5'-D(*AP*CP*AP*GP*GP*TP*CP*AP*CP*TP*AP*TP*CP*AP*GP*TP*CP*AP*AP*AP*AP*TP*AP*CP*C)-3'E,G25N/A
Entity ID: 6
MoleculeChainsLengthOrganism
25-MERF,H25N/A
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.4 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.244 
  • Space Group: P 31
Unit Cell:
Length (Å)Angle (°)
a = 109.759α = 90.00
b = 109.759β = 90.00
c = 265.971γ = 120.00
Software Package:
Software NamePurpose
SHARPphasing
CCP4data scaling
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance