3OLO | pdb_00003olo

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

• PDB DOI: https://doi.org/10.2210/pdb3OLO/pdb

• Classification: TRANSFERASE
• Organism(s): Nostoc sp. PCC 7120 = FACHB-418
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2010-08-26 Released: 2010-09-15 
• Deposition Author(s): Michalska, K., Chhor, G., Bearden, J., Fenske, R.J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.09 Å
• R-Value Free: 
  0.227 (Depositor), 0.231 (DCC) 
• R-Value Work: 
  0.177 (Depositor), 0.176 (DCC) 
• R-Value Observed: 
  0.180 (Depositor) 

Literature

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

Michalska, K., Chhor, G., Bearden, J., Fenske, R.J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

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

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 28.94 kDa 
• Atom Count: 1,972 
• Modeled Residue Count: 221 
• Deposited Residue Count: 236 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Two-component sensor histidine kinase	A, B	118	Nostoc sp. PCC 7120 = FACHB-418	Mutation(s): 0  Gene Names: alr0428 EC: 2.7.13.3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A], D [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-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: 2.09 Å
• R-Value Free:  0.227 (Depositor), 0.231 (DCC) 
• R-Value Work:  0.177 (Depositor), 0.176 (DCC) 
• R-Value Observed: 0.180 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.43	α = 90
b = 85.43	β = 90
c = 67.84	γ = 90

Software Package:

Software Name	Purpose
SBC-Collect	data collection
SHELX	model building
MLPHARE	phasing
DM	model building
ARP/wARP	model building
Coot	model building
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
SHELX	phasing
DM	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-09-15 
Deposition Author(s): Michalska, K., Chhor, G., Bearden, J., Fenske, R.J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2010-09-15
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2024-11-27
  Changes: Data collection, Database references, Derived calculations, Structure summary