1D8L

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.247 

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
  • Primary Citation of Related Structures:  
    1D8L

  • 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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (HOLLIDAY JUNCTION DNA HELICASE RUVA)AB149Escherichia coliMutation(s): 0 
EC: 3.6.4.12
Find proteins for P0A809 (Escherichia coli (strain K12))
Explore P0A809 
Go to UniProtKB:  P0A809
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.247 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.6α = 90
b = 115.6β = 90
c = 34.8γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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