4GS3

Dimeric structure of the N-terminal domain of PriB protein from Thermoanaerobacter tencongensis solved ab initio


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.09 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Dimeric structure of the N-terminal domain of PriB protein from Thermoanaerobacter tengcongensis solved ab initio.

Liebschner, D.Brzezinski, K.Dauter, M.Dauter, Z.Nowak, M.Kur, J.Olszewski, M.

(2012) Acta Crystallogr.,Sect.D 68: 1680-1689

  • DOI: 10.1107/S0907444912041637

  • PubMed Abstract: 
  • PriB is one of the components of the bacterial primosome, which catalyzes the reactivation of stalled replication forks at sites of DNA damage. The N-terminal domain of the PriB protein from the thermophilic bacterium Thermoanaerobacter tengcongensis ...

    PriB is one of the components of the bacterial primosome, which catalyzes the reactivation of stalled replication forks at sites of DNA damage. The N-terminal domain of the PriB protein from the thermophilic bacterium Thermoanaerobacter tengcongensis (TtePriB) was expressed and its crystal structure was solved at the atomic resolution of 1.09 Å by direct methods. The protein chain, which encompasses the first 104 residues of the full 220-residue protein, adopts the characteristic oligonucleotide/oligosaccharide-binding (OB) structure consisting of a five-stranded β-barrel filled with hydrophobic residues and equipped with four loops extending from the barrel. In the crystal two protomers dimerize, forming a six-stranded antiparallel β-sheet. The structure of the N-terminal OB domain of T. tengcongensis shows significant differences compared with mesophile PriBs. While in all other known structures of PriB a dimer is formed by two identical OB domains in separate chains, TtePriB contains two consecutive OB domains in one chain. However, sequence comparison of both the N-terminal and the C-terminal domains of TtePriB suggests that they have analogous structures and that the natural protein possesses a structure similar to a dimer of two N-terminal domains.


    Organizational Affiliation

    Synchrotron Radiation Research Section, MCL, National Cancer Institute, Argonne National Laboratory, Argonne, IL 60439, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Single-stranded DNA-binding protein
A
107Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4)Mutation(s): 0 
Gene Names: Ssb
Find proteins for Q8RBI8 (Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4))
Go to UniProtKB:  Q8RBI8
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 55.560α = 90.00
b = 41.180β = 94.80
c = 38.780γ = 90.00
Software Package:
Software NamePurpose
SHELXL-97refinement
SCALEPACKdata scaling
HKL-3000data reduction
SHELXDphasing
HKL-3000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2012-11-14
    Type: Refinement description
  • Version 1.2: 2012-11-21
    Type: Database references
  • Version 1.3: 2013-01-23
    Type: Database references