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)

Method: X-RAY DIFFRACTION Dmax: 86.5 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Soluble acetylcholine receptor

Aplysia californica

UniProt Q8WSF8

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 5 PDB declaration: pentameric(5) Consistent with protein copy count Chain A; UniProt 18–236 Chain B; UniProt 18–236 Chain C; UniProt 18–236 Chain D; UniProt 18–236 Chain E; UniProt 18–236 Fragment:UNP residues 18-236 Mutation:Y55W 4VU (2R)-2-(pyridin-3-yl)-1-azabicyclo[2.2.2]octane × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;293 K;1.7% PEG 400, 0.085 M HEPES - Na pH 7.5, 1.7 M Ammonium Sulfate, 15% Glycerol Resolution 2.27 Å R-free 0.222

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

85 other PDB entries and 120 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q8WSF8_APLCA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 10–228; UniProt 18–236 Author chain B; PDBConstruct 10–228; UniProt 18–236 Author chain C; PDBConstruct 10–228; UniProt 18–236 Author chain D; PDBConstruct 10–228; UniProt 18–236 Author chain E; PDBConstruct 10–228; UniProt 18–236

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 5bw2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5bw2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5bw2
Deposition date deposition_date2015-06-05
Structure title titleX-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)
Keywords keywordsAChBP, nicotine, acetylcholine, ACETYLCHOLINE BINDING PROTEIN; ACETYLCHOLINE BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier31.47
Radius of gyration Rg (electron density) rg_electron29.85
Forward intensity I(0) i0208762000.00
Molecular weight molecular_weight113880.0 kDa
Excluded volume excluded_volume141930 ų
Envelope volume envelope_volume182110 ų
Hydration-shell volume shell_volume48189 ų
Envelope diameter envelope_diameter91.0
Shell Rg shell_rg39.25
Envelope Rg envelope_rg29.12
Shape Rg shape_rg29.84
Total Rg total_rg30.73
Total atoms total_atoms8094
Residues n_residues1033
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax86.5
Rg (real space) rg_real31.14
Rg uncertainty (real space) rg_real_error0.36
I(0) (real space) i0_real2.0880e+08
I(0) uncertainty (real space) i0_real_error2.9590e+06
Rg (reciprocal space) rg_reciprocal31.28
I(0) (reciprocal space) i0_reciprocal208800000.0000
Solution quality estimate total_estimate0.9049
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary45.0
Skewness Skewness skewness-0.106
Kurtosis Kurtosis kurtosis-0.625
Angular range angular_range— – 0.2500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha44730000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.970; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.859

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 13 domains

SCOP 2.08 (8 domains)

Domain ID domain_idd5bw2a1
Class classb — All beta proteins
Fold Fold foldb.96 — Nicotinic receptor ligand binding domain-like
Superfamily Superfamily superfamilyb.96.1 — Nicotinic receptor ligand binding domain-like
Family Family familyb.96.1.0 — automated matches
Domain ID domain_idd5bw2a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd5bw2b_
Class classb — All beta proteins
Fold Fold foldb.96 — Nicotinic receptor ligand binding domain-like
Superfamily Superfamily superfamilyb.96.1 — Nicotinic receptor ligand binding domain-like
Family Family familyb.96.1.0 — automated matches
Domain ID domain_idd5bw2c1
Class classb — All beta proteins
Fold Fold foldb.96 — Nicotinic receptor ligand binding domain-like
Superfamily Superfamily superfamilyb.96.1 — Nicotinic receptor ligand binding domain-like
Family Family familyb.96.1.0 — automated matches
Domain ID domain_idd5bw2c2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd5bw2d_
Class classb — All beta proteins
Fold Fold foldb.96 — Nicotinic receptor ligand binding domain-like
Superfamily Superfamily superfamilyb.96.1 — Nicotinic receptor ligand binding domain-like
Family Family familyb.96.1.0 — automated matches
Domain ID domain_idd5bw2e1
Class classb — All beta proteins
Fold Fold foldb.96 — Nicotinic receptor ligand binding domain-like
Superfamily Superfamily superfamilyb.96.1 — Nicotinic receptor ligand binding domain-like
Family Family familyb.96.1.0 — automated matches
Domain ID domain_idd5bw2e2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (5 domains)

Domain ID domain_id5bw2A00
Class class2 — Mainly Beta
Architecture architecture70 — Distorted Sandwich
Topology topology170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily10 — Neurotransmitter-gated ion-channel ligand-binding domain
Domain ID domain_id5bw2B00
Class class2 — Mainly Beta
Architecture architecture70 — Distorted Sandwich
Topology topology170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily10 — Neurotransmitter-gated ion-channel ligand-binding domain
Domain ID domain_id5bw2C00
Class class2 — Mainly Beta
Architecture architecture70 — Distorted Sandwich
Topology topology170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily10 — Neurotransmitter-gated ion-channel ligand-binding domain
Domain ID domain_id5bw2D00
Class class2 — Mainly Beta
Architecture architecture70 — Distorted Sandwich
Topology topology170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily10 — Neurotransmitter-gated ion-channel ligand-binding domain
Domain ID domain_id5bw2E00
Class class2 — Mainly Beta
Architecture architecture70 — Distorted Sandwich
Topology topology170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily10 — Neurotransmitter-gated ion-channel ligand-binding domain

8. Citations (1)

9. Files and Curves (10)