7n43

Alpha-conotoxin OmIA with unusual pharmacological properties at alpha7 nicotinic receptors

Method: X-RAY DIFFRACTION Dmax: 89.6 Å Quality: EXCELLENT

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

Acetylcholine-binding protein

Lymnaea stagnalis

UniProt P58154

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 heterocomplex Heteromer Protein × 10 PDB declaration: decameric(10) Consistent with protein copy count Chain A; UniProt 20–229 Chain B; UniProt 20–229 Chain C; UniProt 20–229 Chain D; UniProt 20–229 Chain E; UniProt 20–229 Not recorded Alpha-conotoxin OmIA × 5 (P0C1R7) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;0.2 M ammonium sulfate, 5% PEG4000 and 0.1M sodium acetate trihydrate pH 4.6 Resolution 2.47 Å R-free 0.212

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.

59 other PDB entries and 122 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACHP_LYMST
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–210; UniProt 20–229 Author chain B; PDBConstruct 1–210; UniProt 20–229 Author chain C; PDBConstruct 1–210; UniProt 20–229 Author chain D; PDBConstruct 1–210; UniProt 20–229 Author chain E; PDBConstruct 1–210; UniProt 20–229

Alpha-conotoxin OmIA

OrganismNot specified

UniProt P0C1R7

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 heterocomplex Heteromer Protein × 10 PDB declaration: decameric(10) Consistent with protein copy count Chain F; UniProt 1–17 Chain G; UniProt 1–17 Chain H; UniProt 1–17 Chain I; UniProt 1–17 Chain J; UniProt 1–17 Non-standard monomer:Yes (specific site not provided by mmCIF) Acetylcholine-binding protein × 5 (P58154) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;0.2 M ammonium sulfate, 5% PEG4000 and 0.1M sodium acetate trihydrate pH 4.6 Resolution 2.47 Å R-free 0.212

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.

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CA1A_CONOM
Isoform
PDB entities 2
Chains and sequence ranges Author chain F; PDBConstruct 1–17; UniProt 1–17 Author chain G; PDBConstruct 1–17; UniProt 1–17 Author chain H; PDBConstruct 1–17; UniProt 1–17 Author chain I; PDBConstruct 1–17; UniProt 1–17 Author chain J; PDBConstruct 1–17; UniProt 1–17

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 7n43

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7n43
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7n43
Deposition date deposition_date2021-06-03
Structure title titleAlpha-conotoxin OmIA with unusual pharmacological properties at alpha7 nicotinic receptors
Keywords keywordsAlpha-conotoxin, Acetylcholine-binding protein, 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_guinier31.97
Radius of gyration Rg (electron density) rg_electron30.19
Forward intensity I(0) i0262892000.00
Molecular weight molecular_weight124080.0 kDa
Excluded volume excluded_volume153170 ų
Envelope volume envelope_volume193520 ų
Hydration-shell volume shell_volume50422 ų
Envelope diameter envelope_diameter94.3
Shell Rg shell_rg39.75
Envelope Rg envelope_rg29.49
Shape Rg shape_rg30.17
Total Rg total_rg31.09
Total atoms total_atoms8722
Residues n_residues1104
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 dmax89.6
Rg (real space) rg_real31.63
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real2.6290e+08
I(0) uncertainty (real space) i0_real_error3.6900e+06
Rg (reciprocal space) rg_reciprocal31.78
I(0) (reciprocal space) i0_reciprocal262900000.0000
Solution quality estimate total_estimate0.9067
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.8
Skewness Skewness skewness-0.105
Kurtosis Kurtosis kurtosis-0.646
Angular range angular_range— – 0.2500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha52250000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.960; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.919

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)