3MXN

Crystal structure of the RMI core complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and cellular roles of the RMI core complex from the bloom syndrome dissolvasome.

Hoadley, K.A.Xu, D.Xue, Y.Satyshur, K.A.Wang, W.Keck, J.L.

(2010) Structure 18: 1149-1158

  • DOI: 10.1016/j.str.2010.06.009
  • Primary Citation of Related Structures:  
    3MXN

  • PubMed Abstract: 
  • BLM, the protein product of the gene mutated in Bloom syndrome, is one of five human RecQ helicases. It functions to separate double Holliday junction DNA without genetic exchange as a component of the "dissolvasome," which also includes topoisomeras ...

    BLM, the protein product of the gene mutated in Bloom syndrome, is one of five human RecQ helicases. It functions to separate double Holliday junction DNA without genetic exchange as a component of the "dissolvasome," which also includes topoisomerase IIIα and the RMI (RecQ-mediated genome instability) subcomplex (RMI1 and RMI2). We describe the crystal structure of the RMI core complex, comprising RMI2 and the C-terminal OB domain of RMI1. The overall RMI core structure strongly resembles two-thirds of the trimerization core of the eukaryotic single-stranded DNA-binding protein, Replication Protein A. Immunoprecipitation experiments with RMI2 variants confirm key interactions that stabilize the RMI core interface. Disruption of this interface leads to a dramatic increase in cellular sister chromatid exchange events similar to that seen in BLM-deficient cells. The RMI core interface is therefore crucial for BLM dissolvasome assembly and may have additional cellular roles as a docking hub for other proteins.


    Organizational Affiliation

    Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, 550 Medical Science Center, 1300 University Avenue, Madison, WI 53706-1532, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RecQ-mediated genome instability protein 1A157Homo sapiensMutation(s): 0 
Gene Names: RMI1C9orf76
Find proteins for Q9H9A7 (Homo sapiens)
Explore Q9H9A7 
Go to UniProtKB:  Q9H9A7
NIH Common Fund Data Resources
PHAROS  Q9H9A7
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
RecQ-mediated genome instability protein 2B150Homo sapiensMutation(s): 0 
Gene Names: RMI2C16orf75
Find proteins for Q96E14 (Homo sapiens)
Explore Q96E14 
Go to UniProtKB:  Q96E14
NIH Common Fund Data Resources
PHAROS  Q96E14
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BEN
Query on BEN

Download CCD File 
A
BENZAMIDINE
C7 H8 N2
PXXJHWLDUBFPOL-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.096α = 90
b = 42.223β = 90
c = 152.24γ = 90
Software Package:
Software NamePurpose
MAR345data collection
ARP/wARPmodel building
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-08
    Changes: Refinement description