2byn

Crystal structure of apo AChBP from Aplysia californica

Method: X-RAY DIFFRACTION Dmax: 90.0 Å Quality: EXCELLENT

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

SOLUBLE ACETYLCHOLINE RECEPTOR

OrganismNot specified

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 Not recorded PG4 TETRAETHYLENE GLYCOL × 4 1PE PENTAETHYLENE GLYCOL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 5.6;12-14% PEG 4000, 0.1 M SODIUM CITRATE, PH 5.6, 20% ISOPROPANOL, 5% GLYCEROL Resolution 2.02 Å R-free 0.202

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 9–227; UniProt 18–236 Author chain B; PDBConstruct 9–227; UniProt 18–236 Author chain C; PDBConstruct 9–227; UniProt 18–236 Author chain D; PDBConstruct 9–227; UniProt 18–236 Author chain E; PDBConstruct 9–227; 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 2byn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2byn
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id2byn
Deposition date deposition_date2005-08-03
Structure title titleCrystal structure of apo AChBP from Aplysia californica
Keywords keywords;RECEPTOR, ACETYLCHOLINE BINDING PROTEIN, NICOTINIC ACETYLCHOLINE RECEPTOR, SOLUBLE ACETYLCHOLINE RECEPTOR, CONFORMATIONAL FLEXIBILITY ;; RECEPTOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.45
Radius of gyration Rg (electron density) rg_electron30.71
Forward intensity I(0) i0244341000.00
Molecular weight molecular_weight122130.0 kDa
Excluded volume excluded_volume151730 ų
Envelope volume envelope_volume198830 ų
Hydration-shell volume shell_volume51207 ų
Envelope diameter envelope_diameter95.2
Shell Rg shell_rg40.06
Envelope Rg envelope_rg29.96
Shape Rg shape_rg30.70
Total Rg total_rg31.56
Total atoms total_atoms8594
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 dmax90.0
Rg (real space) rg_real32.08
Rg uncertainty (real space) rg_real_error0.37
I(0) (real space) i0_real2.4430e+08
I(0) uncertainty (real space) i0_real_error3.6470e+06
Rg (reciprocal space) rg_reciprocal32.24
I(0) (reciprocal space) i0_reciprocal244400000.0000
Solution quality estimate total_estimate0.9059
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary45.9
Skewness Skewness skewness-0.102
Kurtosis Kurtosis kurtosis-0.602
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha60200000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.959; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.972; Smooth: 0.929

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 15 domains

SCOP 2.08 (10 domains)

Domain ID domain_idd2byna1
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_idd2byna2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2bynb1
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_idd2bynb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2bync1
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_idd2bync2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2bynd1
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_idd2bynd2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2byne1
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_idd2byne2
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_id2bynA00
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_id2bynB00
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_id2bynC00
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_id2bynD00
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_id2bynE00
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)