2byp

Crystal structure of Aplysia californica AChBP in complex with alpha- conotoxin ImI

Method: X-RAY DIFFRACTION Dmax: 92.2 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 heterocomplex Heteromer Protein × 10 PDB declaration: decameric(10) 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 Not recorded ALPHA-CONOTOXIN IMI × 5 (P50983) NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 7.5;11-14% PEG-4000, 0.1 M TRIS, PH 7.5, 0.4 M MGCL2 Resolution 2.07 Å R-free 0.214

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 7–214; UniProt 18–225 Author chain B; PDBConstruct 7–214; UniProt 18–225 Author chain C; PDBConstruct 7–214; UniProt 18–225 Author chain D; PDBConstruct 7–214; UniProt 18–225 Author chain E; PDBConstruct 7–214; UniProt 18–225

ALPHA-CONOTOXIN IMI

OrganismNot specified

UniProt P50983

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 5–16 Chain G; UniProt 5–16 Chain H; UniProt 5–16 Chain I; UniProt 5–16 Chain J; UniProt 5–16 Non-standard monomer:Yes (specific site not provided by mmCIF) SOLUBLE ACETYLCHOLINE RECEPTOR × 5 (Q8WSF8) NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 7.5;11-14% PEG-4000, 0.1 M TRIS, PH 7.5, 0.4 M MGCL2 Resolution 2.07 Å R-free 0.214

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.

12 other PDB entries and 12 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CA1_CONIM
Isoform
PDB entities 2
Chains and sequence ranges Author chain F; PDBConstruct 1–12; UniProt 5–16 Author chain G; PDBConstruct 1–12; UniProt 5–16 Author chain H; PDBConstruct 1–12; UniProt 5–16 Author chain I; PDBConstruct 1–12; UniProt 5–16 Author chain J; PDBConstruct 1–12; UniProt 5–16

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 2byp

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2byp
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2byp
Deposition date deposition_date2005-08-03
Structure title titleCrystal structure of Aplysia californica AChBP in complex with alpha- conotoxin ImI
Keywords keywordsRECEPTOR, RECEPTOR COMPLEX, NICOTINIC ACETYLCHOLINE RECEPTOR COMPLEX, CONOTOXIN; RECEPTOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.67
Radius of gyration Rg (electron density) rg_electron30.96
Forward intensity I(0) i0267791000.00
Molecular weight molecular_weight126450.0 kDa
Excluded volume excluded_volume156450 ų
Envelope volume envelope_volume203280 ų
Hydration-shell volume shell_volume51938 ų
Envelope diameter envelope_diameter96.9
Shell Rg shell_rg40.30
Envelope Rg envelope_rg30.14
Shape Rg shape_rg30.94
Total Rg total_rg31.84
Total atoms total_atoms8879
Residues n_residues1108
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 dmax92.2
Rg (real space) rg_real32.30
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real2.6780e+08
I(0) uncertainty (real space) i0_real_error3.6410e+06
Rg (reciprocal space) rg_reciprocal32.46
I(0) (reciprocal space) i0_reciprocal267800000.0000
Solution quality estimate total_estimate0.9025
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary46.1
Skewness Skewness skewness-0.107
Kurtosis Kurtosis kurtosis-0.628
Angular range angular_range— – 0.2400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha54830000.0000
Real-space data points n_real_points49
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.949; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.961; Smooth: 0.919

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 5 domains

CATH v4.4 (5 domains)

Domain ID domain_id2bypA00
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_id2bypB00
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_id2bypC00
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_id2bypD00
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_id2bypE00
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)