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 

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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 complex with bacteriophage DNA ends and target DNA--determined from data that extend anisotropically to 5 ...

    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
TransposaseA, B529Escherichia virus MuMutation(s): 2 
Gene Names: A3Mup03
EC: 3.1.22 (UniProt), 6.5.1 (UniProt)
UniProt
Find proteins for P07636 (Escherichia phage Mu)
Explore P07636 
Go to UniProtKB:  P07636
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07636
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (68-MER)C 68Escherichia virus Mu
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (13-MER)D [auth E]13Escherichia virus Mu
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsLengthOrganismImage
DNA (49-MER)E [auth D]49Escherichia virus Mu
Protein Feature View
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  • Reference Sequence
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

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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