Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 24.50 kDa 
• Atom Count: 1611 
• Residue Count: 193 
• Unique protein chains: 1

3NBI

Crystal structure of human RMI1 N-terminus

• DOI: 10.2210/pdb3NBI/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-06-03 Released: 2010-09-22 
• Deposition Author(s): Wang, F., Yang, Y., Singh, T.R., Busygina, V., Guo, R., Wan, K., Wang, W., Sung, P., Meetei, A.R., Lei, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.255 
• R-Value Work: 0.222 

Literature

Crystal Structures of RMI1 and RMI2, Two OB-Fold Regulatory Subunits of the BLM Complex.

Wang, F., Yang, Y., Singh, T.R., Busygina, V., Guo, R., Wan, K., Wang, W., Sung, P., Meetei, A.R., Lei, M.

(2010) Structure 18: 1159-1170

• PubMed: 20826342 
• DOI: 10.1016/j.str.2010.06.008
• Primary Citation of Related Structures:  
  3NBH, 3NBI


• PubMed Abstract: 
  

Mutations in BLM, a RecQ-like helicase, are linked to the autosomal recessive cancer-prone disorder Bloom's syndrome. BLM associates with topoisomerase (Topo) IIIα, RMI1, and RMI2 to form the BLM complex that is essential for genome stability. The RMI1-RMI2 heterodimer stimulates the dissolution of double Holliday junction into non-crossover recombinants mediated by BLM-Topo IIIα and is essential for stabilizing the BLM complex. However, the molecular basis of these functions of RMI1 and RMI2 remains unclear. Here we report the crystal structures of multiple domains of RMI1-RMI2, providing direct confirmation of the existence of three oligonucleotide/oligosaccharide binding (OB)-folds in RMI1-RMI2. Our structural and biochemical analyses revealed an unexpected insertion motif in RMI1N-OB, which is important for stimulating the dHJ dissolution. We also revealed the structural basis of the interaction between RMI1C-OB and RMI2-OB and demonstrated the functional importance of the RMI1-RMI2 interaction in genome stability maintenance.

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Organizational Affiliation: 

Howard Hughes Medical Institute, University of Michigan Medical School, Ann Arbor, MI 48109, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RecQ-mediated genome instability protein 1	A	216	Homo sapiens	Mutation(s): 0  Gene Names: RMI1, C9orf76
Find proteins for Q9H9A7 (Homo sapiens) Explore Q9H9A7  Go to UniProtKB:  Q9H9A7
NIH Common Fund Data Resources
PHAROS:  Q9H9A7 GTEx:  ENSG00000178966

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.255 
• R-Value Work: 0.222 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.896	α = 90
b = 57.896	β = 90
c = 117.475	γ = 120

Software Package:

Software Name	Purpose
MAR345	data collection
SHARP	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-06-03 
• Released Date: 2010-09-22 
Deposition Author(s): Wang, F., Yang, Y., Singh, T.R., Busygina, V., Guo, R., Wan, K., Wang, W., Sung, P., Meetei, A.R., Lei, M.

Revision History 

• Version 1.0: 2010-09-22
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description