8sel

Type IIIb beta-amyloid 40 Filaments from Down Syndrome

Method: ELECTRON MICROSCOPY Dmax: 142.8 Å Quality: SUSPICIOUS

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

Amyloid-beta protein 40

OrganismNot specified

UniProt P05067

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 × 20 PDB declaration: eicosameric(20) Consistent with protein copy count Chain A; UniProt 672–711 Chain B; UniProt 672–711 Chain C; UniProt 672–711 Chain D; UniProt 672–711 Chain E; UniProt 672–711 Chain F; UniProt 672–711 Chain G; UniProt 672–711 Chain H; UniProt 672–711 Chain I; UniProt 672–711 Chain J; UniProt 672–711 Chain K; UniProt 672–711 Chain L; UniProt 672–711 Chain M; UniProt 672–711 Chain N; UniProt 672–711 Chain O; UniProt 672–711 Chain P; UniProt 672–711 Chain Q; UniProt 672–711 Chain R; UniProt 672–711 Chain S; UniProt 672–711 Chain T; UniProt 672–711 Not recorded No other associated polymer ELECTRON MICROSCOPY cryo-EM buffer:pH 7.4 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.80 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.

211 other PDB entries and 282 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name A4_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–40; UniProt 672–711 Author chain B; PDBConstruct 1–40; UniProt 672–711 Author chain C; PDBConstruct 1–40; UniProt 672–711 Author chain D; PDBConstruct 1–40; UniProt 672–711 Author chain E; PDBConstruct 1–40; UniProt 672–711 Author chain F; PDBConstruct 1–40; UniProt 672–711 Author chain G; PDBConstruct 1–40; UniProt 672–711 Author chain H; PDBConstruct 1–40; UniProt 672–711 Author chain I; PDBConstruct 1–40; UniProt 672–711 Author chain J; PDBConstruct 1–40; UniProt 672–711 Author chain K; PDBConstruct 1–40; UniProt 672–711 Author chain L; PDBConstruct 1–40; UniProt 672–711 Author chain M; PDBConstruct 1–40; UniProt 672–711 Author chain N; PDBConstruct 1–40; UniProt 672–711 Author chain O; PDBConstruct 1–40; UniProt 672–711 Author chain P; PDBConstruct 1–40; UniProt 672–711 Author chain Q; PDBConstruct 1–40; UniProt 672–711 Author chain R; PDBConstruct 1–40; UniProt 672–711 Author chain S; PDBConstruct 1–40; UniProt 672–711 Author chain T; PDBConstruct 1–40; UniProt 672–711

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 8sel

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id8sel
Deposition date deposition_date2023-04-10
Structure title titleType IIIb beta-amyloid 40 Filaments from Down Syndrome
Keywords keywordsBeta Amyloid filaments, Down Syndrome, NEUROPEPTIDE, Human Trisomy 21; NEUROPEPTIDE
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier39.79
Radius of gyration Rg (electron density) rg_electron41.49
Forward intensity I(0) i091381600.00
Molecular weight molecular_weight77848.0 kDa
Excluded volume excluded_volume97570 ų
Envelope volume envelope_volume127970 ų
Hydration-shell volume shell_volume30338 ų
Envelope diameter envelope_diameter145.1
Shell Rg shell_rg38.87
Envelope Rg envelope_rg41.35
Shape Rg shape_rg41.49
Total Rg total_rg41.35
Total atoms total_atoms5500
Residues n_residues730
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 dmax142.8
Rg (real space) rg_real40.89
Rg uncertainty (real space) rg_real_error1.81
I(0) (real space) i0_real9.1380e+07
I(0) uncertainty (real space) i0_real_error1.7760e+06
Rg (reciprocal space) rg_reciprocal40.21
I(0) (reciprocal space) i0_reciprocal91320000.0000
Solution quality estimate total_estimate0.4508
Solution quality rating solution_quality SUSPICIOUS a SUSPICIOUS solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.6
Skewness Skewness skewness0.693
Kurtosis Kurtosis kurtosis-0.212
Angular range angular_range— – 0.2000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6263000.0000
Real-space data points n_real_points41
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.415; Stabil: 1.000; Sysdev: 0.062; Positv: 1.000; Valcen: 0.176; Smooth: 0.250

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

8. Citations (1)

9. Files and Curves (10)