2XPW

TetR(D) in complex with oxytetracycline and magnesium.

• PDB DOI: https://doi.org/10.2210/pdb2XPW/pdb

• Classification: TRANSCRIPTION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli K-12
• Mutation(s): No 


• Deposited: 2010-08-30 Released: 2011-09-07 
• Deposition Author(s): Dalm, D., Proft, J., Palm, G.J., Hinrichs, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.44 Å
• R-Value Free: 0.205 
• R-Value Work: 0.177 
• R-Value Observed: 0.178 

Literature

Tetr(D) in Complex with Oxytetracycline.

Dalm, D., Palm, G.J., Proft, J., Hinrichs, W.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 24.07 kDa 
• Atom Count: 2,079 
• Modelled Residue Count: 207 
• Deposited Residue Count: 207 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TETRACYCLINE REPRESSOR PROTEIN CLASS D	A	207	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ACT4 (Escherichia coli) Explore P0ACT4  Go to UniProtKB:  P0ACT4

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
OTC	B [auth A]	OXYTETRACYCLINE C22 H24 N2 O9 IWVCMVBTMGNXQD-PXOLEDIWSA-N
MES	G [auth A]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
CL	D [auth A], E [auth A], F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.44 Å
• R-Value Free: 0.205 
• R-Value Work: 0.177 
• R-Value Observed: 0.178 
• Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.893	α = 90
b = 66.893	β = 90
c = 181.553	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-09-07 
Deposition Author(s): Dalm, D., Proft, J., Palm, G.J., Hinrichs, W.

Revision History  

• Version 1.0: 2011-09-07
  Type: Initial release
  
• Version 1.1: 2019-07-24
  Changes: Data collection
• Version 1.2: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description