8qx2

Aplysia californica acetylcholine-binding protein in complex with racemic spiroimine (+)/(-)-4

Method: X-RAY DIFFRACTION Dmax: 89.8 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 18–225 Chain B; UniProt 18–225 Chain C; UniProt 18–225 Chain D; UniProt 18–225 Chain E; UniProt 18–225 Fragment:UNP residues 18-225 ILR Spiroimine (+)-4 R × 5 IPA ISOPROPYL ALCOHOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.4;293 K;10% polyethylene glycol 1500 (w/v), 0.1 M sodium citrate buffer pH 5.5, 24% isopropanol (v/v) Resolution 2.10 Å R-free 0.210

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 10–217; UniProt 18–225 Author chain B; PDBConstruct 10–217; UniProt 18–225 Author chain C; PDBConstruct 10–217; UniProt 18–225 Author chain D; PDBConstruct 10–217; UniProt 18–225 Author chain E; PDBConstruct 10–217; UniProt 18–225

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 8qx2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8qx2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8qx2
Deposition date deposition_date2023-10-20
Structure title titleAplysia californica acetylcholine-binding protein in complex with racemic spiroimine (+)/(-)-4
Keywords keywordsACHBP, complex, spiroimine, Aplysia californica, CHOLINE-BINDING PROTEIN; CHOLINE-BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.36
Radius of gyration Rg (electron density) rg_electron30.65
Forward intensity I(0) i0241734000.00
Molecular weight molecular_weight122110.0 kDa
Excluded volume excluded_volume151990 ų
Envelope volume envelope_volume197060 ų
Hydration-shell volume shell_volume50929 ų
Envelope diameter envelope_diameter100.7
Shell Rg shell_rg39.91
Envelope Rg envelope_rg29.89
Shape Rg shape_rg30.65
Total Rg total_rg31.49
Total atoms total_atoms8597
Residues n_residues1066
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 dmax89.8
Rg (real space) rg_real32.00
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real2.4170e+08
I(0) uncertainty (real space) i0_real_error3.5370e+06
Rg (reciprocal space) rg_reciprocal32.16
I(0) (reciprocal space) i0_reciprocal241800000.0000
Solution quality estimate total_estimate0.9083
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.0
Skewness Skewness skewness-0.099
Kurtosis Kurtosis kurtosis-0.592
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha61180000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.955; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.971; Smooth: 0.970

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)