3qi1

Design and synthesis of hydroxyethylamine (hea) BACE-1 inhibitors: prime side chromane-containing inhibitors

Method: X-RAY DIFFRACTION Dmax: 69.2 Å Quality: REASONABLE

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

Beta-secretase 1

Homo sapiens

UniProt P56817

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 57–453 Fragment:UNP residues 57-453 C6A N-[(2S,3R)-4-{[(2R,4S)-2-cyclopropyl-6-(2,2-dimethylpropyl)-3,4-dihydro-2H-chromen-4-yl]amino}-1-(3,5-difluorophenyl)-3-hydroxybutan-2-yl]acetamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 4.6;295 K;BACE PROTEIN AT 10MG/ML IN 100MM SODIUM BORATE BUFFER PH 8.5. 1MM COMPOUND ADDED TO PROTEIN AND INCUBATED AT 4 C FOR 3 HOURS. HANGING DROP PLATES SET UP WITH RESERVOIR SOLUTION CONTAINING 4% PEG 8000, 100MM SODIUM ACETATE PH 4.6 THE DROPS WERE MIXED WITH 1:1 (V/V) RATIO OF PROTEIN/COMPOUND TO RESERVOIR AND INCUBATED AT ROOM TEMPERATURE FOR 2 WEEKS. VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K Resolution 2.30 Å R-free 0.269

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.

430 other PDB entries and 736 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BACE1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 12–408; UniProt 57–453

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 3qi1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3qi1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3qi1
Deposition date deposition_date2011-01-26
Structure title titleDesign and synthesis of hydroxyethylamine (hea) BACE-1 inhibitors: prime side chromane-containing inhibitors
Keywords keywordsAspartate Protease, HYDROLASE-HYDROLASE INHIBITOR complex; HYDROLASE/HYDROLASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.15
Radius of gyration Rg (electron density) rg_electron20.89
Forward intensity I(0) i030040500.00
Molecular weight molecular_weight42817.0 kDa
Excluded volume excluded_volume53832 ų
Envelope volume envelope_volume62254 ų
Hydration-shell volume shell_volume24471 ų
Envelope diameter envelope_diameter71.4
Shell Rg shell_rg28.04
Envelope Rg envelope_rg21.11
Shape Rg shape_rg20.87
Total Rg total_rg21.84
Total atoms total_atoms3022
Residues n_residues382
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 dmax69.2
Rg (real space) rg_real22.03
Rg uncertainty (real space) rg_real_error0.33
I(0) (real space) i0_real3.0040e+07
I(0) uncertainty (real space) i0_real_error3.5900e+05
Rg (reciprocal space) rg_reciprocal22.05
I(0) (reciprocal space) i0_reciprocal30040000.0000
Solution quality estimate total_estimate0.7038
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.9
Skewness Skewness skewness0.209
Kurtosis Kurtosis kurtosis-0.431
Angular range angular_range— – 0.3600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5828000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.912; Stabil: 1.000; Sysdev: 0.145; Positv: 1.000; Valcen: 0.998; Smooth: 0.976

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3qi1a_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.2 — Pepsin-like

CATH v4.4 (2 domains)

Domain ID domain_id3qi1A01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases
Domain ID domain_id3qi1A02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases

8. Citations (1)

9. Files and Curves (10)