9lh8

human alpha 7 nicotinic acetylcholine receptor in complex with L-nicotine (four-nicotine-bound desensitized state)

Method: ELECTRON MICROSCOPY Dmax: 155.0 Å Quality: REASONABLE

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

Neuronal acetylcholine receptor subunit alpha-7

Homo sapiens

UniProt P36544

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Homooligomer Protein × 5 其他Polymer 5 PDB declaration: pentameric(5) Consistent with protein copy count Chain A; UniProt 1–502 Chain B; UniProt 1–502 Chain C; UniProt 1–502 Chain D; UniProt 1–502 Chain E; UniProt 1–502 Not recorded 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 5 NCT (S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.74 Å

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.

44 other PDB entries and 44 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACHA7_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–502; UniProt 1–502 Author chain B; PDBConstruct 1–502; UniProt 1–502 Author chain C; PDBConstruct 1–502; UniProt 1–502 Author chain D; PDBConstruct 1–502; UniProt 1–502 Author chain E; PDBConstruct 1–502; UniProt 1–502

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 9lh8

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9lh8
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9lh8
Deposition date deposition_date2025-01-11
Structure title titlehuman alpha 7 nicotinic acetylcholine receptor in complex with L-nicotine (four-nicotine-bound desensitized state)
Keywords keywordsLigand-gated ion channel, Nicotine, Desensitization, Recovery, Closed pore, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier45.21
Radius of gyration Rg (electron density) rg_electron44.71
Forward intensity I(0) i0707867000.00
Molecular weight molecular_weight229560.0 kDa
Excluded volume excluded_volume291230 ų
Envelope volume envelope_volume395600 ų
Hydration-shell volume shell_volume75523 ų
Envelope diameter envelope_diameter162.3
Shell Rg shell_rg47.78
Envelope Rg envelope_rg44.49
Shape Rg shape_rg44.75
Total Rg total_rg44.74
Total atoms total_atoms16168
Residues n_residues2000
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 dmax155.0
Rg (real space) rg_real45.53
Rg uncertainty (real space) rg_real_error1.70
I(0) (real space) i0_real7.0790e+08
I(0) uncertainty (real space) i0_real_error1.4950e+07
Rg (reciprocal space) rg_reciprocal45.22
I(0) (reciprocal space) i0_reciprocal707600000.0000
Solution quality estimate total_estimate0.6008
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary48.7
Skewness Skewness skewness0.603
Kurtosis Kurtosis kurtosis-0.041
Angular range angular_range— – 0.1750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha135100000.0000
Real-space data points n_real_points36
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.666; Stabil: 1.000; Sysdev: 0.062; Positv: 1.000; Valcen: 0.963; Smooth: 0.660

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)