2I05

Escherichia Coli Replication Terminator Protein (Tus) Complexed With TerA DNA

• PDB DOI: https://doi.org/10.2210/pdb2I05/pdb
• NAKB: 2I05

• Classification: REPLICATION/DNA
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2006-08-10 Released: 2007-08-21 
• Deposition Author(s): Oakley, A.J., Mulcair, M.D., Schaeffer, P.M., Dixon, N.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.312 
• R-Value Work: 0.226 
• R-Value Observed: 0.230 

Starting Model: experimental

Literature

Polarity of Termination of DNA Replication in E. coli

Oakley, A.J., Mulcair, M.D., Schaeffer, P.M., Dixon, N.E.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 45.88 kDa 
• Atom Count: 3,115 
• Modelled Residue Count: 335 
• Deposited Residue Count: 341 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication terminus site-binding protein	C [auth A]	309	Escherichia coli	Mutation(s): 0  Gene Names: tus
UniProt
Find proteins for P16525 (Escherichia coli (strain K12)) Explore P16525  Go to UniProtKB:  P16525

Entity ID: 1
Molecule	Chains	Length	Organism	Image
5'-D(*T*TP*AP*GP*TP*TP*AP*CP*AP*AP*CP*AP*TP*AP*CP*T)-3'	A [auth B]	16	N/A

Entity ID: 2
Molecule	Chains	Length	Organism	Image
5'-D(*TP*AP*GP*TP*AP*TP*GP*TP*TP*GP*TP*AP*AP*CP*TP*A)-3'	B [auth C]	16	N/A

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
IOD	D [auth A], E [auth A]	IODIDE ION I XMBWDFGMSWQBCA-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.312 
• R-Value Work: 0.226 
• R-Value Observed: 0.230 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.373	α = 90
b = 63.373	β = 90
c = 252.652	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-08-21 
Deposition Author(s): Oakley, A.J., Mulcair, M.D., Schaeffer, P.M., Dixon, N.E.

Revision History  

• Version 1.0: 2007-08-21
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description