2br7

Crystal Structure of Acetylcholine-binding Protein (AChBP) from Aplysia californica in complex with HEPES

Method: X-RAY DIFFRACTION Dmax: 89.7 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 20–236 Chain B; UniProt 20–236 Chain C; UniProt 20–236 Chain D; UniProt 20–236 Chain E; UniProt 20–236 Not recorded EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 4 X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;100 MM HEPES 1.15 M SODIUM MALONATE, pH 7.00 Resolution 3.00 Å R-free 0.249

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 1–217; UniProt 20–236 Author chain B; PDBConstruct 1–217; UniProt 20–236 Author chain C; PDBConstruct 1–217; UniProt 20–236 Author chain D; PDBConstruct 1–217; UniProt 20–236 Author chain E; PDBConstruct 1–217; UniProt 20–236

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 2br7

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2br7
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2br7
Deposition date deposition_date2005-05-03
Structure title titleCrystal Structure of Acetylcholine-binding Protein (AChBP) from Aplysia californica in complex with HEPES
Keywords keywordsGLYCOPROTEIN, IGG-FOLD, IMMUNOGLOBULIN DOMAIN, PENTAMER, NICOTINIC RECEPTOR, RECEPTOR PROTEIN; RECEPTOR PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.49
Radius of gyration Rg (electron density) rg_electron29.84
Forward intensity I(0) i0222545000.00
Molecular weight molecular_weight117180.0 kDa
Excluded volume excluded_volume146020 ų
Envelope volume envelope_volume187250 ų
Hydration-shell volume shell_volume49588 ų
Envelope diameter envelope_diameter93.7
Shell Rg shell_rg39.19
Envelope Rg envelope_rg29.09
Shape Rg shape_rg29.84
Total Rg total_rg30.73
Total atoms total_atoms8240
Residues n_residues1025
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 dmax89.7
Rg (real space) rg_real31.15
Rg uncertainty (real space) rg_real_error0.39
I(0) (real space) i0_real2.2250e+08
I(0) uncertainty (real space) i0_real_error3.1360e+06
Rg (reciprocal space) rg_reciprocal31.29
I(0) (reciprocal space) i0_reciprocal222600000.0000
Solution quality estimate total_estimate0.9008
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.9
Skewness Skewness skewness-0.103
Kurtosis Kurtosis kurtosis-0.603
Angular range angular_range— – 0.2500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha58080000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.935; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.970; Smooth: 0.929

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (5 domains)

Domain ID domain_idd2br7a_
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_idd2br7b_
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_idd2br7c_
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_idd2br7d_
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_idd2br7e_
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

CATH v4.4 (5 domains)

Domain ID domain_id2br7A00
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_id2br7B00
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_id2br7C00
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_id2br7D00
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_id2br7E00
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)