3A1J

Crystal structure of the human Rad9-Hus1-Rad1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of the Human Rad9-Hus1-Rad1 Clamp

Sohn, S.Y.Cho, Y.

(2009) J Mol Biol 390: 490-502

  • DOI: 10.1016/j.jmb.2009.05.028
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Three evolutionarily conserved proteins, Rad9, Hus1, and Rad1, form a heterotrimeric 9-1-1 complex that plays critical roles in cellular responses to DNA damage by activating checkpoints and by recruiting DNA repair enzymes to DNA lesions. We have de ...

    Three evolutionarily conserved proteins, Rad9, Hus1, and Rad1, form a heterotrimeric 9-1-1 complex that plays critical roles in cellular responses to DNA damage by activating checkpoints and by recruiting DNA repair enzymes to DNA lesions. We have determined the crystal structure of the human Rad9 (residues 1-272)-Hus1-Rad1 complex at 2.5 A resolution. The 9(1-272)-1-1 complex forms a closed ring, with each subunit having a similar structure. Despite its high level of similarity to proliferating cell nucleus antigen in terms of overall structure, the 9(1-272)-1-1 complex exhibits notable differences in local structures, including interdomain connecting loops, H2 and H3 helices, and loops in the vicinity of the helices of each subunit. These local structural variations provide several unique features to the 9-1-1 heterotrimeric complex-including structures of intermolecular interfaces and the inner surface around the central hole, and different electrostatic potentials at and near the interdomain connecting loops of each 9-1-1 subunit-compared to the proliferating cell nucleus antigen trimer. We propose that these structural features allow the 9-1-1 complex to bind to a damaged DNA during checkpoint control and to serve as a platform for base excision repair. We also show that the 9(1-272)-1-1 complex, but not the full-length 9-1-1 complex, forms a stable complex with the 5' recessed DNA, suggesting that the C-terminal tail of Rad9 is involved in the regulation of the 9-1-1 complex in DNA binding.


    Organizational Affiliation

    National Creative Research Center for Structural Biology and Department of Life Science, Pohang University of Science and Technology, Hyo-ja dong, Pohang, KyungBook, South Korea.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cell cycle checkpoint control protein RAD9A
A
266Homo sapiensMutation(s): 0 
Gene Names: Rad9(1-272)RAD9A
EC: 3.1.11.2
Find proteins for Q99638 (Homo sapiens)
Go to UniProtKB:  Q99638
NIH Common Fund Data Resources
PHAROS  Q99638
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Checkpoint protein HUS1
B
281Homo sapiensMutation(s): 0 
Gene Names: HUS1
Find proteins for O60921 (Homo sapiens)
Go to UniProtKB:  O60921
NIH Common Fund Data Resources
PHAROS  O60921
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Cell cycle checkpoint protein RAD1
C
263Homo sapiensMutation(s): 0 
Gene Names: RAD1REC1
EC: 3.1.11.2
Find proteins for O60671 (Homo sapiens)
Go to UniProtKB:  O60671
NIH Common Fund Data Resources
PHAROS  O60671
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SUC
Query on SUC

Download CCD File 
A
SUCROSE
C12 H22 O11
CZMRCDWAGMRECN-UGDNZRGBSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.154α = 90
b = 70.776β = 99.2
c = 86.661γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
SOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2009-04-08 
  • Released Date: 2009-06-02 
  • Deposition Author(s): Sohn, S.Y., Cho, Y.

Revision History 

  • Version 1.0: 2009-06-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance