Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 201.43 kDa 
• Atom Count: 12407 
• Residue Count: 1724 
• Unique protein chains: 1

3T1I

Crystal Structure of Human Mre11: Understanding Tumorigenic Mutations

• DOI: 10.2210/pdb3T1I/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-07-22 Released: 2011-11-30 
• Deposition Author(s): Park, Y.B., Chae, J., Kim, Y., Cho, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.250 
• R-Value Work: 0.227 
• R-Value Observed: 0.228 

Literature

Crystal structure of human mre11: understanding tumorigenic mutations

Park, Y.B., Chae, J., Kim, Y., Cho, Y.

(2011) Structure 19: 1591-1602

• PubMed: 22078559 
• DOI: 10.1016/j.str.2011.09.010
• Primary Citation of Related Structures:  
  3T1I


• PubMed Abstract: 
  

Mre11 plays an important role in repairing damaged DNA by cleaving broken ends and by providing a platform for other DNA repair proteins. Various Mre11 mutations have been identified in several types of cancer. We have determined the crystal structure of the human Mre11 core (hMre11), which contains the nuclease and capping domains. hMre11 dimerizes through the interfaces between loop β3-α3 from one Mre11 and loop β4-β5 from another Mre11, and between loop α2-β3 from one Mre11 and helices α2 and α3 from another Mre11, and assembles into a completely different dimeric architecture compared with bacterial or archaeal Mre11 homologs. Nbs1 binds to the region containing loop α2-β3 which participates in dimerization. The hMre11 structure in conjunction with biochemical analyses reveals that many tumorigenic mutations are primarily associated with Nbs1 binding and partly with nuclease activities, providing a framework for understanding how mutations inactivate Mre11.

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Organizational Affiliation: 

Department of Life Science, Pohang University of Science and Technology, Pohang 790-784, South Korea.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Double-strand break repair protein MRE11A	A, B, C, D	431	Homo sapiens	Mutation(s): 0  Gene Names: HNGS1, MRE11, MRE11A EC: 3.1
Find proteins for P49959 (Homo sapiens) Explore P49959  Go to UniProtKB:  P49959
NIH Common Fund Data Resources
PHAROS  P49959 GTEx  ENSG00000020922

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DTT	A	2,3-DIHYDROXY-1,4-DITHIOBUTANE C4 H10 O2 S2 VHJLVAABSRFDPM-IMJSIDKUSA-N
GOL	A, C, D	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
MN	A, B, C, D	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A,B,C,D	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.250 
• R-Value Work: 0.227 
• R-Value Observed: 0.228 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 134.79	α = 90
b = 135.21	β = 90
c = 135.38	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
CNS	refinement
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-07-22 
• Released Date: 2011-11-30 
Deposition Author(s): Park, Y.B., Chae, J., Kim, Y., Cho, Y.

Revision History 

• Version 1.0: 2011-11-30
  Type: Initial release