4i0i

SPR and structural analysis yield insight towards mechanism of inhibition of BACE inhibitors

Method: X-RAY DIFFRACTION Dmax: 119.0 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 57-453 957 N-[(1S,2R)-1-(3,5-difluorobenzyl)-3-({1-[4-(2,2-dimethylpropyl)thiophen-2-yl]cyclopropyl}amino)-2-hydroxypropyl]acetamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.3;291 K;Human BACE protein was concentrated to 6mg/ml in buffer 0.1M borate pH 8.5. Compound was added to give a final molar access of compound:protein of 8:1. Protein and compound were then incubated on ice for 1 hour. The drops were set up with a 1:1(v/v) ratio of protein to mother liquor in a total volume of 2 ul. Diffraction quality crystals of BACE in complex with compound 19 was obtained by sitting-drop vapor diffusion method at 291K against a reservoir containing 0.1 M sodium acetate pH 5.3, 2% PEG8000, VAPOR DIFFUSION, SITTING DROP Resolution 2.20 Å R-free 0.279
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 57–453 Fragment:unp residues 57-453 957 N-[(1S,2R)-1-(3,5-difluorobenzyl)-3-({1-[4-(2,2-dimethylpropyl)thiophen-2-yl]cyclopropyl}amino)-2-hydroxypropyl]acetamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.3;291 K;Human BACE protein was concentrated to 6mg/ml in buffer 0.1M borate pH 8.5. Compound was added to give a final molar access of compound:protein of 8:1. Protein and compound were then incubated on ice for 1 hour. The drops were set up with a 1:1(v/v) ratio of protein to mother liquor in a total volume of 2 ul. Diffraction quality crystals of BACE in complex with compound 19 was obtained by sitting-drop vapor diffusion method at 291K against a reservoir containing 0.1 M sodium acetate pH 5.3, 2% PEG8000, VAPOR DIFFUSION, SITTING DROP Resolution 2.20 Å R-free 0.279
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 57–453 Fragment:unp residues 57-453 957 N-[(1S,2R)-1-(3,5-difluorobenzyl)-3-({1-[4-(2,2-dimethylpropyl)thiophen-2-yl]cyclopropyl}amino)-2-hydroxypropyl]acetamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.3;291 K;Human BACE protein was concentrated to 6mg/ml in buffer 0.1M borate pH 8.5. Compound was added to give a final molar access of compound:protein of 8:1. Protein and compound were then incubated on ice for 1 hour. The drops were set up with a 1:1(v/v) ratio of protein to mother liquor in a total volume of 2 ul. Diffraction quality crystals of BACE in complex with compound 19 was obtained by sitting-drop vapor diffusion method at 291K against a reservoir containing 0.1 M sodium acetate pH 5.3, 2% PEG8000, VAPOR DIFFUSION, SITTING DROP Resolution 2.20 Å R-free 0.279

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 2–398; UniProt 57–453 Author chain B; PDBConstruct 2–398; UniProt 57–453 Author chain C; PDBConstruct 2–398; 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 4i0i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4i0i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4i0i
Deposition date deposition_date2012-11-16
Structure title titleSPR and structural analysis yield insight towards mechanism of inhibition of BACE inhibitors
Keywords keywordsBACE, Aspartic protease, hydrolysis, 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_guinier36.61
Radius of gyration Rg (electron density) rg_electron35.96
Forward intensity I(0) i0234471000.00
Molecular weight molecular_weight126650.0 kDa
Excluded volume excluded_volume159320 ų
Envelope volume envelope_volume197030 ų
Hydration-shell volume shell_volume46127 ų
Envelope diameter envelope_diameter123.1
Shell Rg shell_rg41.68
Envelope Rg envelope_rg35.85
Shape Rg shape_rg35.99
Total Rg total_rg36.25
Total atoms total_atoms8937
Residues n_residues1124
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 dmax119.0
Rg (real space) rg_real36.60
Rg uncertainty (real space) rg_real_error1.00
I(0) (real space) i0_real2.3450e+08
I(0) uncertainty (real space) i0_real_error3.8220e+06
Rg (reciprocal space) rg_reciprocal36.61
I(0) (reciprocal space) i0_reciprocal234500000.0000
Solution quality estimate total_estimate0.6710
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary36.0
Skewness Skewness skewness0.264
Kurtosis Kurtosis kurtosis-0.570
Angular range angular_range— – 0.2150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha110200000.0000
Real-space data points n_real_points44
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.919; Stabil: 1.000; Sysdev: 0.048; Positv: 1.000; Valcen: 0.960; Smooth: 0.858

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd4i0ia_
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_idd4i0ib_
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_idd4i0ic_
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_id4i0iA01
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_id4i0iA02
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_id4i0iB01
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_id4i0iB02
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_id4i0iC01
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_id4i0iC02
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)