2FXQ | pdb_00002fxq

Single-stranded DNA-binding protein from Thermus aquaticus

PDB DOI: https://doi.org/10.2210/pdb2FXQ/pdb

Classification: DNA BINDING PROTEIN
Organism(s): Thermus aquaticus
Expression System: Escherichia coli BL21
Mutation(s): No

Deposited: 2006-02-06 Released: 2006-02-14
Deposition Author(s): Dauter, Z., Jedrzejczak, R., Dauter, M.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.85 Å
R-Value Free:
0.247 (Depositor), 0.246 (DCC)
R-Value Work:
0.189 (Depositor), 0.189 (DCC)
R-Value Observed:
0.192 (Depositor)

wwPDB Validation 3D Report Full Report

Validation slider image for 2FXQ

This is version 1.3 of the entry. See complete history.

Literature

Structure of the single-stranded DNA-binding protein SSB from Thermus aquaticus.

Jedrzejczak, R., Dauter, M., Dauter, Z., Olszewski, M., Kur, J.

(2006) Acta Crystallogr D Biol Crystallogr 62: 1407-1412

PubMed: 17057346 Search on PubMed
DOI: https://doi.org/10.1107/S0907444906036031
Primary Citation Related Structures:
2FXQ

PubMed Abstract:
The crystal structure of the single-stranded DNA-binding protein from Thermus aquaticus has been solved and refined at 1.85 A resolution. Two monomers, each encompassing two oligonucleotide/oligosaccharide-binding (OB) domains and a number of flexible beta-hairpin loops, form an oligomer of approximate D(2) symmetry typical of bacterial SSBs. Comparison with other SSB structures confirms considerable variability in the mode of oligomerization and aggregation of SSB oligomers.

Organizational Affiliation

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

Macromolecule Content

Total Structure Weight: 30.07 kDa
Atom Count: 1,682
Modeled Residue Count: 197
Deposited Residue Count: 264
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Single-strand binding protein	A	264	Thermus aquaticus	Mutation(s): 0 Gene Names: ssb
UniProt
Find proteins for Q9KH06 (Thermus aquaticus) Explore Q9KH06 Go to UniProtKB: Q9KH06
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q9KH06
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.85 Å
R-Value Free: 0.247 (Depositor), 0.246 (DCC)
R-Value Work: 0.189 (Depositor), 0.189 (DCC)
R-Value Observed: 0.192 (Depositor)

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.14	α = 90
b = 163.77	β = 90
c = 60.16	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

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View more in-depth experimental data

Entry History

Deposition Data

Released Date: 2006-02-14

Deposition Author(s):

Jedrzejczak, R.

Revision History (Full details and data files)

Version 1.0: 2006-02-14
Type: Initial release
Version 1.1: 2008-05-01
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Advisory, Version format compliance
Version 1.3: 2024-02-14
Changes: Data collection, Database references

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.