6K8N | pdb_00006k8n

Crystal structure of the Sulfolobus solfataricus topoisomerase III

• PDB DOI: https://doi.org/10.2210/pdb6K8N/pdb

• Classification: ISOMERASE, DNA BINDING PROTEIN
• Organism(s): Saccharolobus solfataricus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2019-06-13 Released: 2020-06-24 
• Deposition Author(s): Wang, H.Q., Zhang, J.H., Zheng, X., Zheng, Z.F., Dong, Y.H., Huang, L., Gong, Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.247 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.203 (Depositor), 0.200 (DCC) 
• R-Value Observed: 
  0.205 (Depositor) 

Starting Model: experimental

Literature

Crystal structures of the Sulfolobus solfataricus topoisomerase III reveal that its C-terminal novel zinc finger part is a unique decatenation domain

Wang, H.Q., Zhang, J.H., Zheng, X., Zheng, Z.F., Dong, Y.H., Huang, L., Gong, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Macromolecule Content

• Total Structure Weight: 306.97 kDa 
• Atom Count: 22,583 
• Modelled Residue Count: 2,666 
• Deposited Residue Count: 2,672 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
topoisomerase III	A, B, C, D	668	Saccharolobus solfataricus	Mutation(s): 1  EC: 5.99.1.2 (PDB Primary Data), 5.6.2.1 (UniProt)
UniProt
Find proteins for Q97ZJ8 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore Q97ZJ8  Go to UniProtKB:  Q97ZJ8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	E [auth A], F [auth B], G [auth C], H [auth D]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.247 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.203 (Depositor), 0.200 (DCC) 
• R-Value Observed: 0.205 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.671	α = 90
b = 90.04	β = 100.52
c = 156.184	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-06-24 
Deposition Author(s): Wang, H.Q., Zhang, J.H., Zheng, X., Zheng, Z.F., Dong, Y.H., Huang, L., Gong, Y.

Revision History  

• Version 1.0: 2020-06-24
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2024-11-13
  Changes: Structure summary