1D8L

E. COLI HOLLIDAY JUNCTION BINDING PROTEIN RUVA NH2 REGION LACKING DOMAIN III


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Modulation of RuvB function by the mobile domain III of the Holliday junction recognition protein RuvA.

Nishino, T.Iwasaki, H.Kataoka, M.Ariyoshi, M.Fujita, T.Shinagawa, H.Morikawa, K.

(2000) J.Mol.Biol. 298: 407-416

  • DOI: 10.1006/jmbi.2000.3675

  • PubMed Abstract: 
  • In prokaryotes, RuvA-RuvB complexes play a crucial role in the migration of the Holliday junction, which is a key intermediate of homologous recombination. RuvA binds to the Holliday junction and enhances the ATPase activity of RuvB required for bran ...

    In prokaryotes, RuvA-RuvB complexes play a crucial role in the migration of the Holliday junction, which is a key intermediate of homologous recombination. RuvA binds to the Holliday junction and enhances the ATPase activity of RuvB required for branch migration. RuvA adopts a unique domain structure, which assembles into a tetrameric molecule. The previous mutational and proteolytic analyses suggested that mutations in a carboxyl-terminal domain (domain III) impair binding of RuvA to RuvB. In order to clarify the functional role of each domain in vitro, we established the recombinant expression systems, which allow us to analyze structural and biochemical properties of each domain separately. A small-angle X-ray scattering solution study, combined with X-ray crystallographic analyses, was applied to the tetrameric full-length RuvA and its tetrameric NH2 region (domains I and II) lacking the domain III. These results demonstrated that domain III can be completely separate from the tetrameric major core of the NH2 region and freely mobile in solution, through a remarkably flexible loop. Biochemical analyses indicated that domain III not only interacts with RuvB, but also modulates its ATPase activity. This modulation may facilitate the dynamic coupling between RuvA and RuvB during branch migration.


    Organizational Affiliation

    Department of Structural Biology, Biomolecular Engineering Research Institute (BERI), 6-2-3 Furuedai, Osaka, Suita, 565-0874, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HOLLIDAY JUNCTION DNA HELICASE RUVA)
A, B
149Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: ruvA
EC: 3.6.4.12
Find proteins for P0A809 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A809
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.243 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.600α = 90.00
b = 115.600β = 90.00
c = 34.800γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
AMoREphasing
DENZOdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-05-03
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Data collection