4LVI

MobM Relaxase Domain (MOBV; Mob_Pre) bound to plasmid pMV158 oriT DNA (22nt). Mn-bound crystal structure at pH 4.6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of a histidine-DNA nicking/joining mechanism for gene transfer and promiscuous spread of antibiotic resistance.

Pluta, R.Boer, D.R.Lorenzo-Diaz, F.Russi, S.Gomez, H.Fernandez-Lopez, C.Perez-Luque, R.Orozco, M.Espinosa, M.Coll, M.

(2017) Proc Natl Acad Sci U S A 114: E6526-E6535

  • DOI: 10.1073/pnas.1702971114
  • Primary Citation of Related Structures:  
    5N2Q, 4LVI, 4LVJ, 4LVK, 4LVL, 4LVM

  • PubMed Abstract: 
  • Relaxases are metal-dependent nucleases that break and join DNA for the initiation and completion of conjugative bacterial gene transfer. Conjugation is the main process through which antibiotic resistance spreads among bacteria, with multidrug-resistant staphylococci and streptococci infections posing major threats to human health ...

    Relaxases are metal-dependent nucleases that break and join DNA for the initiation and completion of conjugative bacterial gene transfer. Conjugation is the main process through which antibiotic resistance spreads among bacteria, with multidrug-resistant staphylococci and streptococci infections posing major threats to human health. The MOB V family of relaxases accounts for approximately 85% of all relaxases found in Staphylococcus aureus isolates. Here, we present six structures of the MOB V relaxase MobM from the promiscuous plasmid pMV158 in complex with several origin of transfer DNA fragments. A combined structural, biochemical, and computational approach reveals that MobM follows a previously uncharacterized histidine/metal-dependent DNA processing mechanism, which involves the formation of a covalent phosphoramidate histidine-DNA adduct for cell-to-cell transfer. We discuss how the chemical features of the high-energy phosphorus-nitrogen bond shape the dominant position of MOB V histidine relaxases among small promiscuous plasmids and their preference toward Gram-positive bacteria.


    Organizational Affiliation

    Molecular Biology Institute of Barcelona, Consejo Superior de Investigaciones Científicas, 08028 Barcelona, Spain.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Plasmid recombination enzymeA198Streptococcus agalactiaeMutation(s): 0 
Gene Names: premob
UniProt
Find proteins for P13925 (Streptococcus agalactiae)
Explore P13925 
Go to UniProtKB:  P13925
Protein Feature View
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  • Reference Sequence
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  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    ACTTTAT oligonucleotideB7N/A
    Protein Feature View
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    • Reference Sequence
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    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      ATAAAGTATAGTGTG oligonucleotideC15N/A
      Protein Feature View
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      • Reference Sequence
      Small Molecules
      Ligands 2 Unique
      IDChainsName / Formula / InChI Key2D Diagram3D Interactions
      GOL
      Query on GOL

      Download Ideal Coordinates CCD File 
      E [auth A]GLYCEROL
      C3 H8 O3
      PEDCQBHIVMGVHV-UHFFFAOYSA-N
       Ligand Interaction
      MN
      Query on MN

      Download Ideal Coordinates CCD File 
      D [auth A]MANGANESE (II) ION
      Mn
      WAEMQWOKJMHJLA-UHFFFAOYSA-N
       Ligand Interaction
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 1.90 Å
      • R-Value Free: 0.248 
      • R-Value Work: 0.206 
      • R-Value Observed: 0.208 
      • Space Group: P 61 2 2
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 111.06α = 90
      b = 111.06β = 90
      c = 90.74γ = 120
      Software Package:
      Software NamePurpose
      BESTdata collection
      PHASERphasing
      REFMACrefinement
      iMOSFLMdata reduction
      SCALAdata scaling

      Structure Validation

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      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2014-09-24
        Type: Initial release
      • Version 1.1: 2017-10-18
        Changes: Database references