2lfm

A partially folded structure of amyloid-beta(1 40) in an aqueous environment

Method: SOLUTION NMR Dmax: 39.3 Å Quality: GOOD

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

Beta-amyloid 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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 672–711 Not recorded No other associated polymer SOLUTION NMR NMR measurement conditions:pH 7.3;15 K;Ionic strength (raw mmCIF value) 0.07;Pressure ambient NMR sample composition:20 mM potassium phosphate, 50 mM sodium chloride, 93% H2O/7% D2O | 93% H2O/7% D2O Resolution not provided

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

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 2lfm

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id2lfm
Deposition date deposition_date2011-07-06
Structure title titleA partially folded structure of amyloid-beta(1 40) in an aqueous environment
Keywords keywordsPROTEIN FIBRIL; PROTEIN FIBRIL
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier12.17
Radius of gyration Rg (electron density) rg_electron12.60
Forward intensity I(0) i0108161000.00
Molecular weight molecular_weight86197.0 kDa
Excluded volume excluded_volume107340 ų
Envelope volume envelope_volume15704 ų
Hydration-shell volume shell_volume9994 ų
Envelope diameter envelope_diameter46.1
Shell Rg shell_rg18.79
Envelope Rg envelope_rg14.26
Shape Rg shape_rg12.55
Total Rg total_rg13.01
Total atoms total_atoms11900
Residues n_residues800
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 dmax39.3
Rg (real space) rg_real12.18
Rg uncertainty (real space) rg_real_error0.29
I(0) (real space) i0_real1.0820e+08
I(0) uncertainty (real space) i0_real_error1.0200e+06
Rg (reciprocal space) rg_reciprocal12.18
I(0) (reciprocal space) i0_reciprocal108200000.0000
Solution quality estimate total_estimate0.7996
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary13.9
Skewness Skewness skewness0.161
Kurtosis Kurtosis kurtosis-0.682
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha21440.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.813; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.958; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

8. Citations (1)

9. Files and Curves (10)