8AGA

Structure of p-hydroxy benzoic acid ligand bound HosA transcriptional regulator from enteropathogenic Escherichia coli O127:H6 (strain E2348/69)

• PDB DOI: https://doi.org/10.2210/pdb8AGA/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Escherichia coli O127:H6 str. E2348/69
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2022-07-19 Released: 2023-08-02 
• Deposition Author(s): Goswami, A., Kannika, B.R., Madan Kumar, S.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.21 Å
• R-Value Free: 0.238 
• R-Value Work: 0.205 
• R-Value Observed: 0.209 

Literature

Horizontally acquired HosA transcription factor bound with 4-hydroxy-benzoic acid exhibits unique tug-of-water dynamics

Goswami, A., Ullah, S., Brito, J.A.

(2024) bioRxiv 

• DOI: https://doi.org/10.1101/2024.04.24.590444

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.83 kDa 
• Atom Count: 1,158 
• Modelled Residue Count: 131 
• Deposited Residue Count: 143 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transcriptional regulator HosA	A	143	Escherichia coli O127:H6 str. E2348/69	Mutation(s): 0  Gene Names: hosA, E2348C_3010
UniProt
Find proteins for P69782 (Escherichia coli O127:H6 (strain E2348/69 / EPEC)) Explore P69782  Go to UniProtKB:  P69782

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PHB (Subject of Investigation/LOI)	C [auth A]	P-HYDROXYBENZOIC ACID C7 H6 O3 FJKROLUGYXJWQN-UHFFFAOYSA-N
EDO	D [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.21 Å
• R-Value Free: 0.238 
• R-Value Work: 0.205 
• R-Value Observed: 0.209 
• Space Group: P 4₃ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.38	α = 90
b = 67.38	β = 90
c = 95.04	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-08-02 
Deposition Author(s): Goswami, A., Kannika, B.R., Madan Kumar, S.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-08-02
  Type: Initial release
  
• Version 1.1: 2024-06-19
  Changes: Data collection
• Version 1.2: 2024-08-21
  Changes: Database references, Structure summary