8ci2

human alpha7 nicotinic receptor in complex with the C4 nanobody under sub-saturating conditions

Method: ELECTRON MICROSCOPY Dmax: 112.4 Å Quality: GOOD

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 Heteromer Protein × 8 其他Polymer 5 PDB declaration: octameric(8) Consistent with protein copy count Chain A; UniProt 24–347 Chain A; UniProt 455–502 Chain B; UniProt 24–347 Chain B; UniProt 455–502 Chain C; UniProt 24–347 Chain C; UniProt 455–502 Chain D; UniProt 24–347 Chain D; UniProt 455–502 Chain E; UniProt 24–347 Chain E; UniProt 455–502 Not recorded Nanobody C4 × 3 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 5 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 10 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 4.40 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 1–324; UniProt 24–347 Author chain A; PDBConstruct 328–375; UniProt 455–502 Author chain B; PDBConstruct 1–324; UniProt 24–347 Author chain B; PDBConstruct 328–375; UniProt 455–502 Author chain C; PDBConstruct 1–324; UniProt 24–347 Author chain C; PDBConstruct 328–375; UniProt 455–502 Author chain D; PDBConstruct 1–324; UniProt 24–347 Author chain D; PDBConstruct 328–375; UniProt 455–502 Author chain E; PDBConstruct 1–324; UniProt 24–347 Author chain E; PDBConstruct 328–375; UniProt 455–502

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 8ci2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8ci2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8ci2
Deposition date deposition_date2023-02-08
Structure title titlehuman alpha7 nicotinic receptor in complex with the C4 nanobody under sub-saturating conditions
Keywords keywordsion channel nanobody Nicotinic acetylcholine receptor, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier36.92
Radius of gyration Rg (electron density) rg_electron35.79
Forward intensity I(0) i0390835000.00
Molecular weight molecular_weight159140.0 kDa
Excluded volume excluded_volume198700 ų
Envelope volume envelope_volume288520 ų
Hydration-shell volume shell_volume64897 ų
Envelope diameter envelope_diameter119.6
Shell Rg shell_rg44.20
Envelope Rg envelope_rg34.82
Shape Rg shape_rg35.74
Total Rg total_rg36.59
Total atoms total_atoms21802
Residues n_residues1393
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 dmax112.4
Rg (real space) rg_real36.64
Rg uncertainty (real space) rg_real_error0.49
I(0) (real space) i0_real3.9080e+08
I(0) uncertainty (real space) i0_real_error6.0110e+06
Rg (reciprocal space) rg_reciprocal36.82
I(0) (reciprocal space) i0_reciprocal390900000.0000
Solution quality estimate total_estimate0.8842
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary49.6
Skewness Skewness skewness0.086
Kurtosis Kurtosis kurtosis-0.368
Angular range angular_range— – 0.2150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha96700000.0000
Real-space data points n_real_points44
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.878; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.970; Smooth: 0.887

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)