3ifn

X-ray structure of amyloid beta peptide:antibody (Abeta1-40:12A11) complex

Method: X-RAY DIFFRACTION Dmax: 82.5 Å Quality: EXCELLENT

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

Amyloid beta A4 protein

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 heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain P; UniProt 672–711 Fragment:residues 672-711 12A11 FAB antibody heavy chain × 1 12A11 FAB antibody light chain × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;295 K;Protein: 5.3 mg/ml, 10 mM Hepes, pH 7.5, 75 mM NaCl. Protein:peptide molar ratio: 1:4.5. Reservoir: 0.2M NaCl, 25% Peg 4K, 0.1M Hepes pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K Resolution 1.50 Å R-free 0.212

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 3
Chains and sequence ranges Author chain P; 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 3ifn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3ifn
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3ifn
Deposition date deposition_date2009-07-24
Structure title titleX-ray structure of amyloid beta peptide:antibody (Abeta1-40:12A11) complex
Keywords keywordsantibody, amyloid beta peptide, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.19
Radius of gyration Rg (electron density) rg_electron25.05
Forward intensity I(0) i039260400.00
Molecular weight molecular_weight48136.0 kDa
Excluded volume excluded_volume60023 ų
Envelope volume envelope_volume74341 ų
Hydration-shell volume shell_volume25037 ų
Envelope diameter envelope_diameter81.9
Shell Rg shell_rg32.04
Envelope Rg envelope_rg24.58
Shape Rg shape_rg25.03
Total Rg total_rg25.90
Total atoms total_atoms3389
Residues n_residues440
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 dmax82.5
Rg (real space) rg_real26.17
Rg uncertainty (real space) rg_real_error0.49
I(0) (real space) i0_real3.9260e+07
I(0) uncertainty (real space) i0_real_error6.1650e+05
Rg (reciprocal space) rg_reciprocal26.18
I(0) (reciprocal space) i0_reciprocal39260000.0000
Solution quality estimate total_estimate0.9089
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.4
Skewness Skewness skewness0.253
Kurtosis Kurtosis kurtosis-0.613
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6296000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.959; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.956

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id3ifnH01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id3ifnH02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id3ifnL01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id3ifnL02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)