4EZ1 | pdb_00004ez1

Crystal structure of acetylcholine binding protein (AChBP) from Aplysia Californica in complex with alpha-conotoxin BuIA

• PDB DOI: https://doi.org/10.2210/pdb4EZ1/pdb

• Classification: CHOLINE BINDING PROTEIN/TOXIN
• Organism(s): Aplysia californica, Conus bullatus
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2012-05-02 Released: 2013-05-08 
• Deposition Author(s): Talley, T.T., Reger, A.S., Kim, C., Sankaran, B., Ho, K., Taylor, P., McIntosh, J.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.49 Å
• R-Value Free: 
  0.227 (Depositor), 0.226 (DCC) 
• R-Value Work: 
  0.171 (Depositor), 0.171 (DCC) 
• R-Value Observed: 
  0.174 (Depositor) 

Literature

Pairwise interaction of alpha-conotoxin BuIA Pro6 with the beta subunit of nicotinic acetylcholine receptor

Filchakova, O.M., Talley, T.T., Reger, A.S., Kim, C., Ho, K., Han, K., Taylor, P., McIntosh, J.M.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Hetero 10-mer - A5B5 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 10-mer - A5B1C1D1E1F1 

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

Macromolecule Content 

• Total Structure Weight: 137.69 kDa 
• Atom Count: 8,714 
• Modeled Residue Count: 1,093 
• Deposited Residue Count: 1,220 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Soluble acetylcholine receptor	A, B, C, D, E	230	Aplysia californica	Mutation(s): 0
UniProt
Find proteins for Q8WSF8 (Aplysia californica) Explore Q8WSF8  Go to UniProtKB:  Q8WSF8

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-conotoxin BuIA	F [auth K], G [auth L], H [auth M], I [auth N], J [auth O]	14	Conus bullatus	Mutation(s): 0
UniProt
Find proteins for P69657 (Conus bullatus) Explore P69657  Go to UniProtKB:  P69657

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	K [auth C]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.49 Å
• R-Value Free:  0.227 (Depositor), 0.226 (DCC) 
• R-Value Work:  0.171 (Depositor), 0.171 (DCC) 
• R-Value Observed: 0.174 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.437	α = 90
b = 78.636	β = 93.2
c = 117.636	γ = 90

Software Package:

Software Name	Purpose
BOS	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-05-08 
Deposition Author(s): Talley, T.T., Reger, A.S., Kim, C., Sankaran, B., Ho, K., Taylor, P., McIntosh, J.M.

Revision History  

• Version 1.0: 2013-05-08
  Type: Initial release
  
• Version 1.1: 2013-06-19
  Changes: Structure summary
• Version 1.2: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary