4FCY

Crystal structure of the bacteriophage Mu transpososome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.71 Å
  • R-Value Free: 0.437 
  • R-Value Work: 0.393 
  • R-Value Observed: 0.395 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The Mu transpososome structure sheds light on DDE recombinase evolution.

Montano, S.P.Pigli, Y.Z.Rice, P.A.

(2012) Nature 491: 413-417

  • DOI: 10.1038/nature11602
  • Primary Citation of Related Structures:  
    4FCY

  • PubMed Abstract: 
  • Studies of bacteriophage Mu transposition paved the way for understanding retroviral integration and V(D)J recombination as well as many other DNA transposition reactions. Here we report the structure of the Mu transpososome--Mu transposase (MuA) in ...

    Studies of bacteriophage Mu transposition paved the way for understanding retroviral integration and V(D)J recombination as well as many other DNA transposition reactions. Here we report the structure of the Mu transpososome--Mu transposase (MuA) in complex with bacteriophage DNA ends and target DNA--determined from data that extend anisotropically to 5.2 Å, 5.2 Å and 3.7 Å resolution, in conjunction with previously determined structures of individual domains. The highly intertwined structure illustrates why chemical activity depends on formation of the synaptic complex, and reveals that individual domains have different roles when bound to different sites. The structure also provides explanations for the increased stability of the final product complex and for its preferential recognition by the ATP-dependent unfoldase ClpX. Although MuA and many other recombinases share a structurally conserved 'DDE' catalytic domain, comparisons among the limited set of available complex structures indicate that some conserved features, such as catalysis in trans and target DNA bending, arose through convergent evolution because they are important for function.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, Illinois 60637, USA.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TransposaseAB529Escherichia virus MuMutation(s): 2 
Gene Names: A3Mup03
EC: 3.1.22 (UniProt), 6.5.1 (UniProt)
Find proteins for P07636 (Escherichia phage Mu)
Explore P07636 
Go to UniProtKB:  P07636
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (68-MER)C68Escherichia virus Mu
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 3
    MoleculeChainsLengthOrganismImage
    DNA (13-MER)E13Escherichia virus Mu
    Find similar nucleic acids by: 
    (by identity cutoff)  |  Structure
    Entity ID: 4
    MoleculeChainsLengthOrganismImage
    DNA (49-MER)D49Escherichia virus Mu
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 3.71 Å
    • R-Value Free: 0.437 
    • R-Value Work: 0.393 
    • R-Value Observed: 0.395 
    • Space Group: I 41 2 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 196.138α = 90
    b = 196.138β = 90
    c = 349.98γ = 90
    Software Package:
    Software NamePurpose
    HKL-3000data collection
    MLPHAREphasing
    PHENIXrefinement
    HKL-3000data reduction
    HKL-3000data scaling

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2012-11-07
      Type: Initial release
    • Version 1.1: 2013-01-09
      Changes: Database references