4TUI

Crystal structure of MjMre11-DNA1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.59 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

DNA end recognition by the Mre11 nuclease dimer: insights into resection and repair of damaged DNA.

Sung, S.Li, F.Park, Y.B.Kim, J.S.Kim, A.K.Song, O.K.Kim, J.Che, J.Lee, S.E.Cho, Y.

(2014) EMBO J 33: 2422-2435

  • DOI: 10.15252/embj.201488299
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The Mre11-Rad50-Nbs1 (MRN) complex plays important roles in sensing DNA damage, as well as in resecting and tethering DNA ends, and thus participates in double-strand break repair. An earlier structure of Mre11 bound to a short duplex DNA molecule su ...

    The Mre11-Rad50-Nbs1 (MRN) complex plays important roles in sensing DNA damage, as well as in resecting and tethering DNA ends, and thus participates in double-strand break repair. An earlier structure of Mre11 bound to a short duplex DNA molecule suggested that each Mre11 in a dimer recognizes one DNA duplex to bridge two DNA ends at a short distance. Here, we provide an alternative DNA recognition model based on the structures of Methanococcus jannaschii Mre11 (MjMre11) bound to longer DNA molecules, which may more accurately reflect a broken chromosome. An extended stretch of B-form DNA asymmetrically runs across the whole dimer, with each end of this DNA molecule being recognized by an individual Mre11 monomer. DNA binding induces rigid-body rotation of the Mre11 dimer, which could facilitate melting of the DNA end and its juxtaposition to an active site of Mre11. The identified Mre11 interface binding DNA duplex ends is structurally conserved and shown to functionally contribute to efficient resection, non-homologous end joining, and tolerance to DNA-damaging agents when other resection enzymes are absent. Together, the structural, biochemical, and genetic findings presented here offer new insights into how Mre11 recognizes damaged DNA and facilitates DNA repair.


    Organizational Affiliation

    Department of Life Sciences, Pohang University of Science and Technology, Pohang, South Korea lees4@uthscsa.edu yunje@postech.ac.kr.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA double-strand break repair protein Mre11
A, B, C, D, E, F
337Methanocaldococcus jannaschii DSM 2661Mutation(s): 0 
Gene Names: mre11MJ1323
EC: 3.1
Find proteins for Q58719 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Go to UniProtKB:  Q58719
  • Find similar nucleic acids by: Sequence   |   Structure
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(P*TP*CP*CP*TP*AP*CP*GP*TP*GP*CP*CP*AP*G)-3')H13synthetic construct
  • Find similar nucleic acids by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(P*TP*GP*GP*CP*AP*CP*GP*TP*AP*GP*GP*AP*C)-3')G13synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.59 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.468α = 90
b = 183.966β = 99.46
c = 106.538γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2014-06-24 
  • Released Date: 2014-10-15 
  • Deposition Author(s): Sung, S., Cho, Y.

Revision History 

  • Version 1.0: 2014-10-15
    Type: Initial release
  • Version 1.1: 2014-10-29
    Changes: Database references
  • Version 1.2: 2015-01-07
    Changes: Database references