4FBW

Crystal structure of an unfused Mre11-Nbs1 complex with two manganese ions per active site


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of Mre11-Nbs1 complex yields insights into ataxia-telangiectasia-like disease mutations and DNA damage signaling.

Schiller, C.B.Lammens, K.Guerini, I.Coordes, B.Feldmann, H.Schlauderer, F.Mockel, C.Schele, A.Strasser, K.Jackson, S.P.Hopfner, K.P.

(2012) Nat Struct Mol Biol 19: 693-700

  • DOI: 10.1038/nsmb.2323
  • Primary Citation of Related Structures:  
    4FBK, 4FBQ, 4FBW, 4FCX

  • PubMed Abstract: 
  • The Mre11-Rad50-Nbs1 (MRN) complex tethers, processes and signals DNA double-strand breaks, promoting genomic stability. To understand the functional architecture of MRN, we determined the crystal structures of the Schizosaccharomyces pombe Mre11 dim ...

    The Mre11-Rad50-Nbs1 (MRN) complex tethers, processes and signals DNA double-strand breaks, promoting genomic stability. To understand the functional architecture of MRN, we determined the crystal structures of the Schizosaccharomyces pombe Mre11 dimeric catalytic domain alone and in complex with a fragment of Nbs1. Two Nbs1 subunits stretch around the outside of the nuclease domains of Mre11, with one subunit additionally bridging and locking the Mre11 dimer via a highly conserved asymmetrical binding motif. Our results show that Mre11 forms a flexible dimer and suggest that Nbs1 not only is a checkpoint adaptor but also functionally influences Mre11-Rad50. Clinical mutations in Mre11 are located along the Nbs1-interaction sites and weaken the Mre11-Nbs1 interaction. However, they differentially affect DNA repair and telomere maintenance in Saccharomyces cerevisiae, potentially providing insight into their different human disease pathologies.


    Organizational Affiliation

    Gene Center, Ludwig Maximilians University Munich, Munich, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA repair protein rad32AB417Schizosaccharomyces pombe 972h-Mutation(s): 0 
Gene Names: rad32SPAC13C5.07
Find proteins for Q09683 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore Q09683 
Go to UniProtKB:  Q09683
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA repair and telomere maintenance protein nbs1CD59Schizosaccharomyces pombe 972h-Mutation(s): 0 
Gene Names: nbs1SPBC6B1.09c
Find proteins for O43070 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore O43070 
Go to UniProtKB:  O43070
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download CCD File 
A, B
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.234 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.122α = 90
b = 79.955β = 90
c = 220.93γ = 90
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release
  • Version 1.1: 2012-07-25
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Advisory, Refinement description