1TXY

E. coli PriB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.259 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of PriB, a component of the Escherichia coli replication restart primosome

Lopper, M.Holton, J.M.Keck, J.L.

(2004) Structure 12: 1967-1975

  • DOI: 10.1016/j.str.2004.09.004

  • PubMed Abstract: 
  • Maintenance of genome stability following DNA damage requires origin-independent reinitiation of DNA replication at repaired replication forks. In E. coli, PriA, PriB, PriC, and DnaT play critical roles in recognizing repaired replication forks and r ...

    Maintenance of genome stability following DNA damage requires origin-independent reinitiation of DNA replication at repaired replication forks. In E. coli, PriA, PriB, PriC, and DnaT play critical roles in recognizing repaired replication forks and reloading the replisome onto the template to reinitiate DNA replication. Here, we report the 2.0 A resolution crystal structure of E. coli PriB, revealing a dimer that consists of a single structural domain formed by two oligonucleotide/oligosaccharide binding (OB) folds. Structural similarity of PriB to single-stranded DNA binding proteins reveals insights into its mechanisms of DNA binding. The structure further establishes a putative protein interaction surface that may contribute to the role of PriB in primosome assembly by facilitating interactions with PriA and DnaT. This is the first high-resolution structure of a protein involved in oriC-independent replisome loading and provides unique insight into mechanisms of replication restart in E. coli.


    Organizational Affiliation

    Department of Biomolecular Chemistry, University of Wisconsin Medical School, 550 Medical Sciences Center, 1300 University Avenue, Madison, WI 53706, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Primosomal replication protein n
A, B
104Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: priB
Find proteins for P07013 (Escherichia coli (strain K12))
Go to UniProtKB:  P07013
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.259 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.902α = 90.00
b = 60.294β = 90.00
c = 66.304γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
REFMACrefinement
SOLVEphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-11-16
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance