1V1Q

Crystal structure of PriB- a primosomal DNA replication protein of Escherichia coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of Prib- a Primosomal DNA Replication Protein of Escherichia Coli

Liu, J.-H.Chang, T.-W.Huang, C.-Y.Chen, S.-U.Wu, H.-N.Chang, M.-C.Hsiao, C.-D.

(2004) J.Biol.Chem. 279: 50465

  • DOI: 10.1074/jbc.M406773200

  • PubMed Abstract: 
  • PriB is one of the Escherichia coli varphiX-type primosome proteins that are required for assembly of the primosome, a mobile multi-enzyme complex responsible for the initiation of DNA replication. Here we report the crystal structure of the E. coli ...

    PriB is one of the Escherichia coli varphiX-type primosome proteins that are required for assembly of the primosome, a mobile multi-enzyme complex responsible for the initiation of DNA replication. Here we report the crystal structure of the E. coli PriB at 2.1 A resolution by multi-wavelength anomalous diffraction using a mercury derivative. The polypeptide chain of PriB is structurally similar to that of single-stranded DNA-binding protein (SSB). However, the biological unit of PriB is a dimer, not a homotetramer like SSB. Electrophoretic mobility shift assays demonstrated that PriB binds single-stranded DNA and single-stranded RNA with comparable affinity. We also show that PriB binds single-stranded DNA with certain base preferences. Based on the PriB structural information and biochemical studies, we propose that the potential tetramer formation surface and several other regions of PriB may participate in protein-protein interaction during DNA replication. These findings may illuminate the role of PriB in varphiX-type primosome assembly.


    Organizational Affiliation

    Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan 114.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PRIMOSOMAL REPLICATION PROTEIN N
A, B
134Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: priB
Find proteins for P07013 (Escherichia coli (strain K12))
Go to UniProtKB:  P07013
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CYS
Query on CYS

Download SDF File 
Download CCD File 
A, B
CYSTEINE
C3 H7 N O2 S
XUJNEKJLAYXESH-REOHCLBHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.322α = 90.00
b = 57.358β = 90.00
c = 97.019γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
SOLVEphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-25
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance