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 

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

  • 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 III╬▒ 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RecQ-mediated genome instability protein 1
A
157Homo sapiensMutation(s): 0 
Gene Names: RMI1 (C9orf76)
Find proteins for Q9H9A7 (Homo sapiens)
Go to Gene View: RMI1
Go to UniProtKB:  Q9H9A7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RecQ-mediated genome instability protein 2
B
150Homo sapiensMutation(s): 0 
Gene Names: RMI2 (C16orf75)
Find proteins for Q96E14 (Homo sapiens)
Go to Gene View: RMI2
Go to UniProtKB:  Q96E14
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BEN
Query on BEN

Download SDF File 
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 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.096α = 90.00
b = 42.223β = 90.00
c = 152.240γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
MAR345data collection
ARP/wARPmodel building
HKL-2000data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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