2QIB | pdb_00002qib

Crystal structure of tetR-family transcriptional regulator from Streptomyces coelicolor

• PDB DOI: https://doi.org/10.2210/pdb2QIB/pdb

• Classification: TRANSCRIPTION
• Organism(s): Streptomyces coelicolor A3(2)
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2007-07-03 Released: 2007-09-04 
• Deposition Author(s): Zhang, R., Xu, X., Zheng, H., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 
  0.214 (Depositor), 0.216 (DCC) 
• R-Value Work: 
  0.177 (Depositor), 0.177 (DCC) 
• R-Value Observed: 
  0.179 (Depositor) 

Literature

The crystal structure of tetR-family transcriptional regulator from Streptomyces coelicolor.

Zhang, R., Xu, X., Zheng, H., Savchenko, A., Edwards, A., Joachimiak, A.

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: 52.62 kDa 
• Atom Count: 4,042 
• Modeled Residue Count: 430 
• Deposited Residue Count: 462 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
tetR-family transcriptional regulator	A, B	231	Streptomyces coelicolor A3(2)	Mutation(s): 6  Gene Names: GI:21220695, SCO2223, SC10B7.18
UniProt
Find proteins for Q9KZ14 (Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)) Explore Q9KZ14  Go to UniProtKB:  Q9KZ14

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
P6G	C [auth A], D [auth A], E [auth B], F [auth B]	HEXAETHYLENE GLYCOL C12 H26 O7 IIRDTKBZINWQAW-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free:  0.214 (Depositor), 0.216 (DCC) 
• R-Value Work:  0.177 (Depositor), 0.177 (DCC) 
• R-Value Observed: 0.179 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.607	α = 90
b = 76.292	β = 107.54
c = 65.262	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data reduction
HKL-2000	data scaling
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-04 
Deposition Author(s): Zhang, R., Xu, X., Zheng, H., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2007-09-04
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Refinement description, Version format compliance
• Version 1.2: 2024-11-13
  Changes: Data collection, Database references, Derived calculations, Structure summary