9OF3 | pdb_00009of3

Structure of the Acinetobacter baumannii Response Regulator PmrA Receiver Domain D10N mutation

• PDB DOI: https://doi.org/10.2210/pdb9OF3/pdb

• Classification: TRANSCRIPTION
• Organism(s): Acinetobacter baumannii
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2025-04-29 Released: 2025-11-26 
• Deposition Author(s): Jaimes, F.E., Milton, M.E., Hondros, A.D., Kinkead, J., Cavanagh, J.
• 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: 2.67 Å
• R-Value Free: 
  0.275 (Depositor), 0.274 (DCC) 
• R-Value Work: 
  0.225 (Depositor), 0.224 (DCC) 
• R-Value Observed: 
  0.227 (Depositor) 

Starting Model: experimental

Literature

PmrA Mutations in Drug-Resistant Acinetobacter baumannii Affect Sensor Kinase-Response Regulator Interaction and Phosphotransfer

Jaimes, F.E., Hondros, A.D., Kinkead, J., Milton, M.E., Thompson, R.J., Figg, A.M., Melander, C., Cavanagh, J.

(2025) Microorganisms 13

• DOI: https://doi.org/10.3390/microorganisms13112600

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: native gel electrophoresis

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Biological Assembly Evidence: native gel electrophoresis

Biological Assembly 3  

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

Biological assembly 3 assigned by authors.

Biological Assembly 4  

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

Biological assembly 4 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 115.44 kDa 
• Atom Count: 7,602 
• Modeled Residue Count: 949 
• Deposited Residue Count: 1,016 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PmrA	A, B, C, D, E, F, G, H	127	Acinetobacter baumannii	Mutation(s): 1  Gene Names:  pmrA, basR_1, basR_2, qseB, qseB_2, A7M90_18170, ABR2091_2956, ABUW_0828, AUO97_02740, B9W25_09955, B9X95_17090, CBE85_16420, DWA16_01580, EJ062_06180, F2P40_15420, F4T83_01935, FJU42_11495, FPK81_16510, FQZ18_03960, G3N53_18550, GNY86_16835, GSE42_16350, IAG11_11965, IHV20_16245, J6E47_03800, JHZ39_002196, LV35_02798, MKP18_003095, SAMEA104305318_02859, SAMEA4394745_03473
UniProt
Find proteins for E2FGC2 (Acinetobacter baumannii) Explore E2FGC2  Go to UniProtKB:  E2FGC2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG (Subject of Investigation/LOI)	I [auth A], J [auth H]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.67 Å
• R-Value Free:  0.275 (Depositor), 0.274 (DCC) 
• R-Value Work:  0.225 (Depositor), 0.224 (DCC) 
• R-Value Observed: 0.227 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 109.742	α = 90
b = 109.742	β = 90
c = 214.38	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
PHENIX	refinement
JBluIce-EPICS	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-11-26 
Deposition Author(s): Jaimes, F.E., Milton, M.E., Hondros, A.D., Kinkead, J., Cavanagh, J.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01 AI136904

Revision History  

• Version 1.0: 2025-11-26
  Type: Initial release