4HQP

Alpha7 nicotinic receptor chimera and its complex with Alpha bungarotoxin

• PDB DOI: https://doi.org/10.2210/pdb4HQP/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens, Lymnaea stagnalis, Bungarus multicinctus
• Expression System: Komagataella pastoris
• Mutation(s): No 


• Deposited: 2012-10-25 Released: 2013-07-17 
• Deposition Author(s): Li, S.X., Cheng, K., Gomoto, R., Bren, N., Huang, S., Sine, S., Chen, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free: 0.321 
• R-Value Work: 0.311 
• R-Value Observed: 0.311 

Literature

Structural principles for Alpha-neurotoxin binding to and selectivity among nicotinic receptors

Li, S.X., Cheng, K., Gomoto, R., Bren, N., Huang, S., Sine, S., Chen, L.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 158.46 kDa 
• Atom Count: 11,092 
• Modelled Residue Count: 1,375 
• Deposited Residue Count: 1,375 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha7 nicotinic receptor chimera	A, B, C, D, E	202	Homo sapiens, Lymnaea stagnalis This entity is chimeric	Mutation(s): 0
UniProt
Find proteins for P58154 (Lymnaea stagnalis) Explore P58154  Go to UniProtKB:  P58154

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-bungarotoxin isoform V31	F, G, H, I, J	73	Bungarus multicinctus	Mutation(s): 0
UniProt
Find proteins for P60616 (Bungarus multicinctus) Explore P60616  Go to UniProtKB:  P60616

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	K	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	L [auth A], M [auth A], N [auth B], O [auth C], P [auth C], Q [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free: 0.321 
• R-Value Work: 0.311 
• R-Value Observed: 0.311 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 142.15	α = 90
b = 142.15	β = 90
c = 518.135	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-07-17 
Deposition Author(s): Li, S.X., Cheng, K., Gomoto, R., Bren, N., Huang, S., Sine, S., Chen, L.

Revision History  

• Version 1.0: 2013-07-17
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary