4B1R

Tetracycline repressor class D mutant H100A in complex with iso-7- Chlortetracycline

• PDB DOI: https://doi.org/10.2210/pdb4B1R/pdb

• Classification: TRANSCRIPTION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli K-12
• Mutation(s): Yes 


• Deposited: 2012-07-12 Released: 2013-07-24 
• Deposition Author(s): Eltschkner, S., Palm, G.J., Schneider, J., Hinrichs, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.260 
• R-Value Work: 0.206 
• R-Value Observed: 0.208 

Starting Model: experimental

Literature

Tetracycline Repressor Class D Mutant H100A in Complex with Iso-7-Chlortetracycline

Eltschkner, S., Palm, G.J., Schneider, 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: 23.88 kDa 
• Atom Count: 1,753 
• Modelled Residue Count: 198 
• 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): 1
UniProt
Find proteins for P0ACT4 (Escherichia coli) Explore P0ACT4  Go to UniProtKB:  P0ACT4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ITC	B [auth A]	ISO-7-CHLORTETRACYCLINE C22 H23 Cl N2 O8 GFSLIMZISCAANG-AXVXPIMKSA-N
CL	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.260 
• R-Value Work: 0.206 
• R-Value Observed: 0.208 
• Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.36	α = 90
b = 68.36	β = 90
c = 179.61	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-07-24 
Deposition Author(s): Eltschkner, S., Palm, G.J., Schneider, J., Hinrichs, W.

Revision History  

• Version 1.0: 2013-07-24
  Type: Initial release
  
• Version 1.1: 2019-07-17
  Changes: Data collection
• Version 1.2: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description