8D91

Crystal structure of ChoE in complex with acetate and tetraethylammonium (TEA)

• PDB DOI: https://doi.org/10.2210/pdb8D91/pdb

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


• Deposited: 2022-06-09 Released: 2023-06-14 
• Deposition Author(s): Pham, V.D., Shi, R.
• Funding Organization(s): Fonds de Recherche du Quebec - Nature et Technologies (FRQNT)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.222 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 

Starting Model: experimental

Literature

Crystal structures of bacterial acetylcholinesterase ChoE provide insights into the plasticity of catalytic Ser in regulating the active site geometry and the functional state of the SGNH hydrolases

Pham, V.D., Couture, M., Lortie, L.-A., Picard, M.-E., Charette, S., Levesque, R., Shi, R.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 63.47 kDa 
• Atom Count: 4,977 
• Modelled Residue Count: 573 
• Deposited Residue Count: 574 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ChoE	A, B	287	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: choE, PA4921
UniProt
Find proteins for Q9HUP2 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9HUP2  Go to UniProtKB:  Q9HUP2

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NET (Subject of Investigation/LOI)	D [auth A], F [auth B]	TETRAETHYLAMMONIUM ION C8 H20 N CBXCPBUEXACCNR-UHFFFAOYSA-N
ACT (Subject of Investigation/LOI)	C [auth A], E [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.222 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.653	α = 90
b = 81.85	β = 99.61
c = 81.311	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-06-14 
Deposition Author(s): Pham, V.D., Shi, R.

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Funding Organization	Location	Grant Number
Fonds de Recherche du Quebec - Nature et Technologies (FRQNT)	Canada	183530

Revision History  

• Version 1.0: 2023-06-14
  Type: Initial release
  
• Version 1.1: 2023-10-25
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-20
  Changes: Structure summary