3IQT

Structure of the HPT domain of Sensor protein barA from Escherichia coli CFT073.

• PDB DOI: https://doi.org/10.2210/pdb3IQT/pdb

• Classification: TRANSFERASE
• Organism(s): Escherichia coli CFT073
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2009-08-20 Released: 2009-09-22 
• Deposition Author(s): Cuff, M.E., Rakowski, E., Kim, Y., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.181 
• R-Value Work: 0.141 
• R-Value Observed: 0.143 

Literature

Structure of the HPT domain of Sensor protein barA from Escherichia coli CFT073.

Cuff, M.E., Rakowski, E., Kim, Y., Freeman, L., Joachimiak, A.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 14.19 kDa 
• Atom Count: 1,161 
• Modelled Residue Count: 123 
• Deposited Residue Count: 123 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Signal transduction histidine-protein kinase barA	A	123	Escherichia coli CFT073	Mutation(s): 0  Gene Names: barA, c3349 EC: 2.7.13.3
UniProt
Find proteins for P0AEC6 (Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)) Explore P0AEC6  Go to UniProtKB:  P0AEC6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BTB	C [auth A]	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C8 H19 N O5 OWMVSZAMULFTJU-UHFFFAOYSA-N
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.181 
• R-Value Work: 0.141 
• R-Value Observed: 0.143 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 24.316	α = 90
b = 60.359	β = 108.21
c = 37.156	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
SHELXD	phasing
SHELXE	model building
SOLVE	phasing
RESOLVE	phasing
ARP/wARP	model building
CCP4	phasing
O	model building
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-09-22 
Deposition Author(s): Cuff, M.E., Rakowski, E., Kim, Y., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2009-09-22
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description