5BW2

X-ray crystal structure of Aplysia californica acetylcholine binding protein (Ac-AChBP) Y55W in complex with 2-Pyridin-3-yl-1-aza-bicyclo[2.2.2]octane; 2-(3-pyridyl)quinuclidine; 2-PQ (TI-4699)

• PDB DOI: https://doi.org/10.2210/pdb5BW2/pdb

• Classification: ACETYLCHOLINE BINDING PROTEIN
• Organism(s): Aplysia californica
• Expression System: Homo sapiens
• Mutation(s): Yes 


• Deposited: 2015-06-05 Released: 2015-06-24 
• Deposition Author(s): Bobango, J., Sankaran, B., Park, J.F., Wu, J., Talley, T.T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.222 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 

Literature

Comparisons of Binding Affinities for Neuronal Nicotinic Receptors (NNRs) and AChBPs

Bobango, J., Sankaran, B., Park, J.F., Wu, J., Talley, T.T.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Homo 5-mer - A5 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 131.93 kDa 
• Atom Count: 8,519 
• Modelled Residue Count: 1,033 
• Deposited Residue Count: 1,150 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Soluble acetylcholine receptor	A, B, C, D, E	230	Aplysia californica	Mutation(s): 1
UniProt
Find proteins for Q8WSF8 (Aplysia californica) Explore Q8WSF8  Go to UniProtKB:  Q8WSF8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
4VU	F [auth A], G [auth B], H [auth C], I [auth D]	(2R)-2-(pyridin-3-yl)-1-azabicyclo[2.2.2]octane C12 H16 N2 YJYPZLAZNIGNRP-GFCCVEGCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.222 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 163.74	α = 90
b = 84.4	β = 130.8
c = 119.66	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data scaling
PDB_EXTRACT	data extraction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-06-24 
Deposition Author(s): Bobango, J., Sankaran, B., Park, J.F., Wu, J., Talley, T.T.

Revision History  

• Version 1.0: 2015-06-24
  Type: Initial release
  
• Version 1.1: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description, Source and taxonomy