4k8s

Hydroxyethylamine-based inhibitors of BACE1: P1-P3 macrocyclization can improve potency, selectivity, and cell activity

Method: X-RAY DIFFRACTION Dmax: 119.8 Å Quality: GOOD

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 59–446 Fragment:UNP residues 59-446 1QT (3S)-3-[(1R)-2-{[(4S)-6-ethyl-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl]amino}-1-hydroxyethyl]-4-azabicyclo[11.3.1]heptadeca-1(17),13,15-trien-5-one × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;295 K;Well buffer is equal volume 1.7 M NaH2PO4 and 0.9M K2HPO4., pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K Resolution 2.39 Å R-free 0.260
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 59–446 Fragment:UNP residues 59-446 1QT (3S)-3-[(1R)-2-{[(4S)-6-ethyl-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl]amino}-1-hydroxyethyl]-4-azabicyclo[11.3.1]heptadeca-1(17),13,15-trien-5-one × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;295 K;Well buffer is equal volume 1.7 M NaH2PO4 and 0.9M K2HPO4., pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K Resolution 2.39 Å R-free 0.260
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 59–446 Fragment:UNP residues 59-446 1QT (3S)-3-[(1R)-2-{[(4S)-6-ethyl-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl]amino}-1-hydroxyethyl]-4-azabicyclo[11.3.1]heptadeca-1(17),13,15-trien-5-one × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;295 K;Well buffer is equal volume 1.7 M NaH2PO4 and 0.9M K2HPO4., pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K Resolution 2.39 Å R-free 0.260

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 734 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 1–388; UniProt 59–446 Author chain B; PDBConstruct 1–388; UniProt 59–446 Author chain C; PDBConstruct 1–388; UniProt 59–446

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 4k8s

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4k8s
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4k8s
Deposition date deposition_date2013-04-18
Structure title titleHydroxyethylamine-based inhibitors of BACE1: P1-P3 macrocyclization can improve potency, selectivity, and cell activity
Keywords keywordsProtease, 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_guinier36.58
Radius of gyration Rg (electron density) rg_electron35.95
Forward intensity I(0) i0230042000.00
Molecular weight molecular_weight125810.0 kDa
Excluded volume excluded_volume158420 ų
Envelope volume envelope_volume195490 ų
Hydration-shell volume shell_volume45815 ų
Envelope diameter envelope_diameter122.7
Shell Rg shell_rg41.61
Envelope Rg envelope_rg35.95
Shape Rg shape_rg35.98
Total Rg total_rg36.23
Total atoms total_atoms8883
Residues n_residues1113
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 dmax119.8
Rg (real space) rg_real36.58
Rg uncertainty (real space) rg_real_error1.04
I(0) (real space) i0_real2.3000e+08
I(0) uncertainty (real space) i0_real_error3.3930e+06
Rg (reciprocal space) rg_reciprocal36.59
I(0) (reciprocal space) i0_reciprocal230000000.0000
Solution quality estimate total_estimate0.8896
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary39.0
Skewness Skewness skewness0.275
Kurtosis Kurtosis kurtosis-0.550
Angular range angular_range— – 0.2150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha96770000.0000
Real-space data points n_real_points44
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.913; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.954; Smooth: 0.867

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd4k8sa_
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
Domain ID domain_idd4k8sb_
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
Domain ID domain_idd4k8sc_
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 (6 domains)

Domain ID domain_id4k8sA01
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_id4k8sA02
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_id4k8sB01
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_id4k8sB02
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_id4k8sC01
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_id4k8sC02
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)