4D8J

Structure of E. coli MatP-mats complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.55 Å
  • R-Value Free: 0.313 
  • R-Value Work: 0.299 
  • R-Value Observed: 0.299 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular basis for a protein-mediated DNA-bridging mechanism that functions in condensation of the E. coli chromosome.

Dupaigne, P.Tonthat, N.K.Espeli, O.Whitfill, T.Boccard, F.Schumacher, M.A.

(2012) Mol Cell 48: 560-571

  • DOI: 10.1016/j.molcel.2012.09.009
  • Primary Citation of Related Structures:  
    3VEA, 3VEB, 4D8J

  • PubMed Abstract: 
  • The E. coli chromosome is condensed into insulated regions termed macrodomains (MDs), which are essential for genomic packaging. How chromosomal MDs are specifically organized and compacted is unknown. Here, we report studies revealing the molecular basis for Terminus-containing (Ter) chromosome condensation by the Ter-specific factor MatP ...

    The E. coli chromosome is condensed into insulated regions termed macrodomains (MDs), which are essential for genomic packaging. How chromosomal MDs are specifically organized and compacted is unknown. Here, we report studies revealing the molecular basis for Terminus-containing (Ter) chromosome condensation by the Ter-specific factor MatP. MatP contains a tripartite fold with a four-helix bundle DNA-binding motif, ribbon-helix-helix and C-terminal coiled-coil. Strikingly, MatP-matS structures show that the MatP coiled-coils form bridged tetramers that flexibly link distant matS sites. Atomic force microscopy and electron microscopy studies demonstrate that MatP alone loops DNA. Mutation of key coiled-coil residues destroys looping and causes a loss of Ter condensation in vivo. Thus, these data reveal the molecular basis for a protein-mediated DNA-bridging mechanism that mediates condensation of a large chromosomal domain in enterobacteria.


    Organizational Affiliation

    Centre de Génétique Moléculaire du CNRS, Associé à l'Université Paris-Sud, 91198 Gif-sur-Yvette, France.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Macrodomain Ter protein ABCDGHKL150Escherichia coliMutation(s): 0 
Gene Names: matPycbGb0956JW0939
Find proteins for P0A8N0 (Escherichia coli (strain K12))
Explore P0A8N0 
Go to UniProtKB:  P0A8N0
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    5'-D(*TP*TP*CP*GP*TP*GP*AP*CP*AP*TP*TP*GP*TP*CP*AP*CP*GP*AP*A)-3'F, J, N, P19N/A
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      5'-D(*TP*TP*CP*GP*TP*GP*AP*CP*AP*AP*TP*GP*TP*CP*AP*CP*GP*AP*A)-3'E, I, M, O19N/A
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 3.55 Å
      • R-Value Free: 0.313 
      • R-Value Work: 0.299 
      • R-Value Observed: 0.299 
      • Space Group: P 21 21 21
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 114.87α = 90
      b = 180.1β = 90
      c = 184.95γ = 90
      Software Package:
      Software NamePurpose
      ADSCdata collection
      PHASERphasing
      CNSrefinement
      MOSFLMdata reduction
      SCALAdata scaling

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2012-11-21
        Type: Initial release
      • Version 1.1: 2013-01-30
        Changes: Database references