3CWF

Crystal structure of PAS domain of two-component sensor histidine kinase

• PDB DOI: https://doi.org/10.2210/pdb3CWF/pdb

• Classification: TRANSFERASE
• Organism(s): Bacillus subtilis subsp. subtilis str. 168
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-04-21 Released: 2008-05-06 
• Deposition Author(s): Chang, C., Tesar, C., Gu, M., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.244 
• R-Value Work: 0.194 
• R-Value Observed: 0.197 

Literature

Extracytoplasmic PAS-like domains are common in signal transduction proteins.

Chang, C., Tesar, C., Gu, M., Babnigg, G., Joachimiak, A., Pokkuluri, P.R., Szurmant, H., Schiffer, M.

(2010) J Bacteriol 192: 1156-1159

• PubMed: 20008068 
• DOI: https://doi.org/10.1128/JB.01508-09
• Primary Citation of Related Structures:  
  3CWF


• PubMed Abstract: 
  

  We present the crystal structure of the extracytoplasmic domain of the Bacillus subtilis PhoR sensor histidine kinase, part of a two-component system involved in adaptation to low environmental phosphate concentrations. In addition to the PhoR structure, we predict that the majority of the extracytoplasmic domains of B. subtilis sensor kinases will adopt a fold similar to the ubiquitous PAS domain.

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Organizational Affiliation: 

Biosciences Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 generated by PISA (software)

Biological Assembly 3  

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

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 26.44 kDa 
• Atom Count: 1,801 
• Modelled Residue Count: 216 
• Deposited Residue Count: 244 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alkaline phosphatase synthesis sensor protein phoR	A, B	122	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: phoR, BSU29100 EC: 2.7.13.3
UniProt
Find proteins for P23545 (Bacillus subtilis (strain 168)) Explore P23545  Go to UniProtKB:  P23545

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	C [auth A], E [auth B]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
EDO	D [auth A], F [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.244 
• R-Value Work: 0.194 
• R-Value Observed: 0.197 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.503	α = 90
b = 67.632	β = 90
c = 77.695	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-05-06 
Deposition Author(s): Chang, C., Tesar, C., Gu, M., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2008-05-06
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Refinement description, Source and taxonomy, Version format compliance
• Version 1.2: 2024-02-21
  Changes: Data collection, Database references, Derived calculations