2RHF

D. radiodurans RecQ HRDC domain 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.10 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure and function of the regulatory C-terminal HRDC domain from Deinococcus radiodurans RecQ.

Killoran, M.P.Keck, J.L.

(2008) Nucleic Acids Res 36: 3139-3149

  • DOI: 10.1093/nar/gkn143
  • Primary Citation of Related Structures:  
    2RHF

  • PubMed Abstract: 
  • RecQ helicases are critical for maintaining genome integrity in organisms ranging from bacteria to humans by participating in a complex network of DNA metabolic pathways. Their diverse cellular functions require specialization and coordination of multiple protein domains that integrate catalytic functions with DNA-protein and protein-protein interactions ...

    RecQ helicases are critical for maintaining genome integrity in organisms ranging from bacteria to humans by participating in a complex network of DNA metabolic pathways. Their diverse cellular functions require specialization and coordination of multiple protein domains that integrate catalytic functions with DNA-protein and protein-protein interactions. The RecQ helicase from Deinococcus radiodurans (DrRecQ) is unusual among RecQ family members in that it has evolved to utilize three 'Helicase and RNaseD C-terminal' (HRDC) domains to regulate its activity. In this report, we describe the high-resolution structure of the C-terminal-most HRDC domain of DrRecQ. The structure reveals unusual electrostatic surface features that distinguish it from other HRDC domains. Mutation of individual residues in these regions affects the DNA binding affinity of DrRecQ and its ability to unwind a partial duplex DNA substrate. Taken together, the results suggest the unusual electrostatic surface features of the DrRecQ HRDC domain may be important for inter-domain interactions that regulate structure-specific DNA binding and help direct DrRecQ to specific recombination/repair sites.


    Organizational Affiliation

    Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI 53706-1532, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA helicase RecQA77Deinococcus radiodurans R1Mutation(s): 0 
Gene Names: recQDR_1289
EC: 3.6.4.12
Find proteins for Q9RUU2 (Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422))
Explore Q9RUU2 
Go to UniProtKB:  Q9RUU2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download Ideal Coordinates CCD File 
B [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 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: 1.10 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.978α = 90
b = 49.978β = 90
c = 83.61γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
DMphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance