4ep3

Crystal Structure of inactive single chain wild-type HIV-1 Protease in Complex with the substrate CA-p2

Method: X-RAY DIFFRACTION Dmax: 58.4 Å Quality: GOOD

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

protease, tethered dimer

HIV-1 M:B_ARV2/SF2

UniProt P03369

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 491–589 Chain A; UniProt 491–589 Not recorded substrate CA-p2 × 1 (Q9YP46) GOL GLYCEROL × 3 BME BETA-MERCAPTOETHANOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.2;295 K;126mM Phosphate buffer pH 6.2, 63mM Sodium Citrate, 24-29% Ammonium Sulfate, hanging drop, vapor diffusion, temperature 295K, VAPOR DIFFUSION, HANGING DROP Resolution 1.81 Å R-free 0.227

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.

80 other PDB entries and 96 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1A2
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–99; UniProt 491–589 Author chain A; PDBConstruct 105–203; UniProt 491–589

substrate CA-p2

OrganismNot specified

UniProt Q9YP46

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 E; UniProt 359–367 Not recorded protease, tethered dimer × 1 (P03369) GOL GLYCEROL × 3 BME BETA-MERCAPTOETHANOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.2;295 K;126mM Phosphate buffer pH 6.2, 63mM Sodium Citrate, 24-29% Ammonium Sulfate, hanging drop, vapor diffusion, temperature 295K, VAPOR DIFFUSION, HANGING DROP Resolution 1.81 Å R-free 0.227

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.

10 other PDB entries and 10 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q9YP46_9HIV1
Isoform
PDB entities 2
Chains and sequence ranges Author chain E; PDBConstruct 1–9; UniProt 359–367

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 4ep3

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4ep3
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4ep3
Deposition date deposition_date2012-04-16
Structure title titleCrystal Structure of inactive single chain wild-type HIV-1 Protease in Complex with the substrate CA-p2
Keywords keywords;HIV-1 protease, specificity design, drug design, Protease inhibitors, AIDS, Aspartyl protease, HYDROLASE, hydrolase-hydrolase substrate complex ;; hydrolase/hydrolase substrate
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier17.96
Radius of gyration Rg (electron density) rg_electron16.99
Forward intensity I(0) i08110530.00
Molecular weight molecular_weight22265.0 kDa
Excluded volume excluded_volume28510 ų
Envelope volume envelope_volume31563 ų
Hydration-shell volume shell_volume15853 ų
Envelope diameter envelope_diameter57.5
Shell Rg shell_rg22.71
Envelope Rg envelope_rg17.27
Shape Rg shape_rg17.02
Total Rg total_rg17.89
Total atoms total_atoms1564
Residues n_residues207
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 dmax58.4
Rg (real space) rg_real17.92
Rg uncertainty (real space) rg_real_error0.37
I(0) (real space) i0_real8.1110e+06
I(0) uncertainty (real space) i0_real_error1.0300e+05
Rg (reciprocal space) rg_reciprocal17.93
I(0) (reciprocal space) i0_reciprocal8111000.0000
Solution quality estimate total_estimate0.8813
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary21.3
Skewness Skewness skewness0.325
Kurtosis Kurtosis kurtosis-0.283
Angular range angular_range— – 0.4450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3280000.0000
Real-space data points n_real_points75
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.826; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.983

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4ep3A01
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_id4ep3A02
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)