3K2N

The crystal structure of sigma-54-dependent transcriptional regulator domain from Chlorobium Tepidum TLS

• PDB DOI: https://doi.org/10.2210/pdb3K2N/pdb

• Classification: transcription regulator
• Organism(s): Chlorobaculum tepidum TLS
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2009-09-30 Released: 2010-01-19 
• Deposition Author(s): Wu, R., Clancy, S., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.280 
• R-Value Work: 0.197 
• R-Value Observed: 0.201 

Literature

The crystal structure of sigma-54-dependent transcriptional regulator domain from Chlorobium

Wu, R., Clancy, S., 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: 39.82 kDa 
• Atom Count: 2,821 
• Modelled Residue Count: 354 
• Deposited Residue Count: 354 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sigma-54-dependent transcriptional regulator	A, B	177	Chlorobaculum tepidum TLS	Mutation(s): 0  Gene Names: CT0108, GAF
UniProt
Find proteins for Q8KG60 (Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)) Explore Q8KG60  Go to UniProtKB:  Q8KG60

Small Molecules

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: 2.50 Å
• R-Value Free: 0.280 
• R-Value Work: 0.197 
• R-Value Observed: 0.201 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.121	α = 90
b = 81.25	β = 90
c = 83.522	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MLPHARE	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-01-19 
Deposition Author(s): Wu, R., Clancy, S., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2010-01-19
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2019-07-17
  Changes: Data collection, Derived calculations, Refinement description