1MUS

crystal structure of Tn5 transposase complexed with resolved outside end DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure/function insights into Tn5 transposition.

Steiniger-White, M.Rayment, I.Reznikoff, W.S.

(2004) Curr Opin Struct Biol 14: 50-57

  • DOI: 10.1016/j.sbi.2004.01.008
  • Primary Citation of Related Structures:  
    1MUS

  • PubMed Abstract: 
  • Prokaryotic transposon 5 (Tn5) serves as a model system for studying the molecular mechanism of DNA transposition. Elucidation of the X-ray co-crystal structure of Tn5 transposase complexed with a DNA recognition end sequence provided the first three ...

    Prokaryotic transposon 5 (Tn5) serves as a model system for studying the molecular mechanism of DNA transposition. Elucidation of the X-ray co-crystal structure of Tn5 transposase complexed with a DNA recognition end sequence provided the first three-dimensional picture of an intermediate in a transposition/retroviral integration pathway. The many Tn5 transposase-DNA co-crystal structures now available complement biochemical and genetic studies, allowing a comprehensive and detailed understanding of transposition mechanisms. Specifically, the structures reveal two different types of protein-DNA contacts: cis contacts, required for initial DNA recognition, and trans contacts, required for catalysis. Protein-protein contacts required for synapsis are also seen. Finally, the two divalent metals in the active site of the transposase support a 'two-metal-ion' mechanism for Tn5 transposition.


    Organizational Affiliation

    University of Wisconsin-Madison, Department of Biochemistry, 433 Babcock Drive, Madison, WI 53706, USA. mmsteini@wisc.edu



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Tn5 transposaseA477Escherichia coliMutation(s): 6 
Gene Names: tnpAtnp
EC: 3.1
Find proteins for Q46731 (Escherichia coli)
Explore Q46731 
Go to UniProtKB:  Q46731
Protein Feature View
Expand
  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA transferred strandB20N/A
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      DNA non-transferred strandC20N/A
      Small Molecules
      Ligands 3 Unique
      IDChainsName / Formula / InChI Key2D Diagram3D Interactions
      EDO
      Query on EDO

      Download CCD File 
      A
      1,2-ETHANEDIOL
      C2 H6 O2
      LYCAIKOWRPUZTN-UHFFFAOYSA-N
       Ligand Interaction
      MN
      Query on MN

      Download CCD File 
      A
      MANGANESE (II) ION
      Mn
      WAEMQWOKJMHJLA-UHFFFAOYSA-N
       Ligand Interaction
      MG
      Query on MG

      Download CCD File 
      A
      MAGNESIUM ION
      Mg
      JLVVSXFLKOJNIY-UHFFFAOYSA-N
       Ligand Interaction
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 1.90 Å
      • R-Value Free: 0.249 
      • R-Value Work: 0.191 
      • R-Value Observed: 0.193 
      • Space Group: P 65 2 2
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 112.7α = 90
      b = 112.7β = 90
      c = 235.9γ = 120
      Software Package:
      Software NamePurpose
      DENZOdata reduction
      HKL-2000data reduction
      EPMRphasing
      TNTrefinement
      HKL-2000data scaling

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History 

      • Version 1.0: 2002-09-27
        Type: Initial release
      • Version 1.1: 2008-04-28
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance