1xn2

New substrate binding pockets for beta-secretase.

Method: X-RAY DIFFRACTION Dmax: 137.3 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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 58–446 Fragment:Catalytic domain of beta-secretase OM03-4 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;290 K;16% PEG8000, 100mM Cacodylate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K Resolution 1.90 Å R-free 0.220
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 58–446 Fragment:Catalytic domain of beta-secretase OM03-4 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;290 K;16% PEG8000, 100mM Cacodylate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K Resolution 1.90 Å R-free 0.220
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 58–446 Fragment:Catalytic domain of beta-secretase OM03-4 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;290 K;16% PEG8000, 100mM Cacodylate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K Resolution 1.90 Å R-free 0.220
4 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 58–446 Fragment:Catalytic domain of beta-secretase OM03-4 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;290 K;16% PEG8000, 100mM Cacodylate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K Resolution 1.90 Å R-free 0.220

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 733 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 1–389; UniProt 58–446 Author chain B; PDBConstruct 1–389; UniProt 58–446 Author chain C; PDBConstruct 1–389; UniProt 58–446 Author chain D; PDBConstruct 1–389; UniProt 58–446

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 1xn2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1xn2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1xn2
Deposition date deposition_date2004-10-04
Structure title titleNew substrate binding pockets for beta-secretase.
Keywords keywords;beta secretase, memapsin2, BACE, ASP2, Aspartic protease, Alzheimer's disease, Drug design, 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_guinier41.94
Radius of gyration Rg (electron density) rg_electron41.45
Forward intensity I(0) i0458342000.00
Molecular weight molecular_weight178460.0 kDa
Excluded volume excluded_volume224030 ų
Envelope volume envelope_volume288850 ų
Hydration-shell volume shell_volume57953 ų
Envelope diameter envelope_diameter141.8
Shell Rg shell_rg46.93
Envelope Rg envelope_rg40.64
Shape Rg shape_rg41.44
Total Rg total_rg41.74
Total atoms total_atoms12600
Residues n_residues1592
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 dmax137.3
Rg (real space) rg_real41.86
Rg uncertainty (real space) rg_real_error1.21
I(0) (real space) i0_real4.5830e+08
I(0) uncertainty (real space) i0_real_error8.1440e+06
Rg (reciprocal space) rg_reciprocal41.94
I(0) (reciprocal space) i0_reciprocal458400000.0000
Solution quality estimate total_estimate0.8953
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary57.8
Skewness Skewness skewness0.172
Kurtosis Kurtosis kurtosis-0.590
Angular range angular_range— – 0.1900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha113700000.0000
Real-space data points n_real_points39
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.909; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.908

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1xn2a_
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_idd1xn2b_
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_idd1xn2c_
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_idd1xn2d_
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 (8 domains)

Domain ID domain_id1xn2A01
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_id1xn2A02
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_id1xn2B01
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_id1xn2B02
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_id1xn2C01
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_id1xn2C02
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_id1xn2D01
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_id1xn2D02
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)