3fkt

Crystal Structure of Human Beta Secretase Complexed with Spiropiperdine Iminohydantoin Inhibitor

Method: X-RAY DIFFRACTION Dmax: 69.0 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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 43–446 Fragment:PROTEASE DOMAIN (RESIDUES 43-446) Mutation:K95A,E97A SII N-(4-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)acetamide × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5;293 K;1.5M LITHIUM SULFATE, 0.1M HEPES BUFFER, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K, PH 7.50. Crystals were grown with L124671 and spiropiperdine iminoh was back soaked in the crystal at pH 5.0, pH 5.00 Resolution 1.90 Å R-free 0.217
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 43–446 Fragment:PROTEASE DOMAIN (RESIDUES 43-446) Mutation:K95A,E97A SII N-(4-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)acetamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5;293 K;1.5M LITHIUM SULFATE, 0.1M HEPES BUFFER, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K, PH 7.50. Crystals were grown with L124671 and spiropiperdine iminoh was back soaked in the crystal at pH 5.0, pH 5.00 Resolution 1.90 Å R-free 0.217

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 735 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 2–405; UniProt 43–446

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 3fkt

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3fkt
Deposition date deposition_date2008-12-17
Structure title titleCrystal Structure of Human Beta Secretase Complexed with Spiropiperdine Iminohydantoin Inhibitor
Keywords keywordsASPARTYL PROTEASE, BACE, Alternative splicing, Glycoprotein, Hydrolase, Membrane, Polymorphism, Protease, Transmembrane, Zymogen; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.90
Radius of gyration Rg (electron density) rg_electron20.68
Forward intensity I(0) i028025500.00
Molecular weight molecular_weight41353.0 kDa
Excluded volume excluded_volume51990 ų
Envelope volume envelope_volume59880 ų
Hydration-shell volume shell_volume23872 ų
Envelope diameter envelope_diameter71.1
Shell Rg shell_rg27.67
Envelope Rg envelope_rg20.90
Shape Rg shape_rg20.67
Total Rg total_rg21.61
Total atoms total_atoms2919
Residues n_residues368
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 dmax69.0
Rg (real space) rg_real21.79
Rg uncertainty (real space) rg_real_error0.28
I(0) (real space) i0_real2.8030e+07
I(0) uncertainty (real space) i0_real_error3.5030e+05
Rg (reciprocal space) rg_reciprocal21.81
I(0) (reciprocal space) i0_reciprocal28030000.0000
Solution quality estimate total_estimate0.8998
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.8
Skewness Skewness skewness0.228
Kurtosis Kurtosis kurtosis-0.403
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5956000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.900; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.994

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_idd3fkta_
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_id3fktA01
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_id3fktA02
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)