1EQQ

SINGLE STRANDED DNA BINDING PROTEIN AND SSDNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.339 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Roles of functional loops and the C-terminal segment of a single-stranded DNA binding protein elucidated by X-Ray structure analysis

Matsumoto, T.Morimoto, Y.Shibata, N.Kinebuchi, T.Shimamoto, N.Tsukihara, T.Yasuoka, N.

(2000) J.Biochem.(Tokyo) 127: 329-335

  • Primary Citation of Related Structures:  1QVC
  • Also Cited By: 4MZ9

  • PubMed Abstract: 
  • The single-stranded DNA (ssDNA) binding protein from Escherichia coli (EcoSSB) plays a central role in DNA replication, recombination and repair. The tertiary structure of EcoSSB was determined at 2.2 A resolution. This is rather higher resolution th ...

    The single-stranded DNA (ssDNA) binding protein from Escherichia coli (EcoSSB) plays a central role in DNA replication, recombination and repair. The tertiary structure of EcoSSB was determined at 2.2 A resolution. This is rather higher resolution than previously reported. Crystals were grown from the homogeneous intact protein but the EcoSSB tetramer in the crystals contains truncated subunits lacking a part of the C-terminal. The structure determined includes biologically important flexible loops and C-terminal regions, and revealed the existence of concavities. These concavities include the residues important for ssDNA binding. An ssDNA can be fitted on the concavities and further stabilized through interactions with the loops forming flexible lids. It seems likely to play a central role in the binding of ssDNA.


    Organizational Affiliation

    Department of Life Science, Himeji Institute of Technology, Kamigori, Ako-gun, Hyogo 678-1297, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SINGLE STRANDED DNA BINDING PROTEIN
A, B, C, D
178Escherichia coli (strain K12)Gene Names: ssb (exrB, lexC)
Find proteins for P0AGE0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AGE0
Entity ID: 1
MoleculeChainsLengthOrganism
5'-R(*(5MU)P*(5MU)P*(5MU))-3'M,N3N/A
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
5MU
Query on 5MU
M, N
RNA LINKINGC10 H15 N2 O9 PU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.339 
  • R-Value Work: 0.213 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.714α = 90.00
b = 60.473β = 112.60
c = 94.733γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CNSphasing
CCP4data scaling
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance