9FQE | pdb_00009fqe

Pseudomonas aeruginosa Elastase in complex with a phosphonate based inhibitor (R-configured)

• PDB DOI: https://doi.org/10.2210/pdb9FQE/pdb

• Classification: HYDROLASE
• Organism(s): Pseudomonas aeruginosa
• Mutation(s): No 


• Deposited: 2024-06-16 Released: 2025-06-25 
• Deposition Author(s): Klein, A., Hirsch, A.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 
  0.180 (Depositor), 0.180 (DCC) 
• R-Value Work: 
  0.149 (Depositor), 0.149 (DCC) 
• R-Value Observed: 
  0.150 (Depositor) 

Starting Model: experimental

Literature

Pseudomonas aeruginosa Elastase in complex with R-configured inhibitor

Klein, A., Hirsch, A.

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: 33.77 kDa 
• Atom Count: 2,673 
• Modeled Residue Count: 298 
• Deposited Residue Count: 301 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Elastase	A	301	Pseudomonas aeruginosa	Mutation(s): 0  EC: 3.4.24.26
UniProt
Find proteins for P14756 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore P14756  Go to UniProtKB:  P14756

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1IEU (Subject of Investigation/LOI)	C [auth A]	[(2~{R})-1-[[(2~{S})-1-[(3,4-dichlorophenyl)amino]-1-oxidanylidene-3-pyridin-2-yl-propan-2-yl]amino]-4-methyl-1-oxidanylidene-pentan-2-yl]phosphonic acid C20 H24 Cl2 N3 O5 P QHPNZAUZGYZXLX-ZWKOTPCHSA-N
ZN	D [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free:  0.180 (Depositor), 0.180 (DCC) 
• R-Value Work:  0.149 (Depositor), 0.149 (DCC) 
• R-Value Observed: 0.150 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 39.667	α = 100.216
b = 40.108	β = 95.064
c = 45.252	γ = 106.407

Software Package:

Software Name	Purpose
PHENIX	refinement
Coot	model building
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-06-25 
Deposition Author(s): Klein, A., Hirsch, A.

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Funding Organization	Location	Grant Number
Other government	Germany	--

Revision History  

• Version 1.0: 2025-06-25
  Type: Initial release