2RHF

D. radiodurans RecQ HRDC domain 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.177 

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

  • 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 mul ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA helicase RecQ
A
77Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422)Mutation(s): 0 
Find proteins for Q9RUU2 (Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422))
Go to UniProtKB:  Q9RUU2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.177 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 49.978α = 90.00
b = 49.978β = 90.00
c = 83.610γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
ADSCdata collection
MOSFLMdata reduction
DMphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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