9OWG | pdb_00009owg

Crystal Structure of the Immunity Protein (52 domain-containing protein) from Pseudomonas aeruginosa PAO1.

• PDB DOI: https://doi.org/10.2210/pdb9OWG/pdb

• Classification: ANTITOXIN
• Organism(s): Pseudomonas aeruginosa PAO1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-06-02 Released: 2025-06-18 
• Deposition Author(s): Minasov, G., Wawrzak, Z., Skarina, T., Stogios, P.J., Savchenko, A., Satchell, K.F., Center for Structural Biology of Infectious Diseases (CSBID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 
  0.201 (Depositor), 0.206 (DCC) 
• R-Value Work: 
  0.172 (Depositor), 0.181 (DCC) 
• R-Value Observed: 
  0.173 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of the Immunity Protein (52 domain-containing protein) from Pseudomonas aeruginosa PAO1.

Minasov, G., Wawrzak, Z., Skarina, T., Stogios, P.J., Savchenko, A., Satchell, K.F., Center for Structural Biology of Infectious Diseases (CSBID)

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 28.15 kDa 
• Atom Count: 2,012 
• Modeled Residue Count: 228 
• Deposited Residue Count: 242 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Immunity protein 52 domain-containing protein	A	242	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: PA3908
UniProt
Find proteins for Q9HXA5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9HXA5  Go to UniProtKB:  Q9HXA5

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	B [auth A]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
PO4	C [auth A], D [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
EDO	E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CO3	F [auth A]	CARBONATE ION C O3 BVKZGUZCCUSVTD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free:  0.201 (Depositor), 0.206 (DCC) 
• R-Value Work:  0.172 (Depositor), 0.181 (DCC) 
• R-Value Observed: 0.173 (Depositor) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 86.425	α = 90
b = 86.425	β = 90
c = 81.853	γ = 120

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-06-18 
Deposition Author(s): Minasov, G., Wawrzak, Z., Skarina, T., Stogios, P.J., Savchenko, A., Satchell, K.F., Center for Structural Biology of Infectious Diseases (CSBID)

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	75N93022C00035

Revision History  

• Version 1.0: 2025-06-18
  Type: Initial release