4eq0

Crystal Structure of inactive single chain variant of HIV-1 Protease in Complex with the substrate p2-NC

Method: X-RAY DIFFRACTION Dmax: 57.8 Å Quality: REASONABLE

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 p2-NC × 1 (Q9YP46) BME BETA-MERCAPTOETHANOL × 1 EDO 1,2-ETHANEDIOL × 3 GOL GLYCEROL × 3 ACT ACETATE ION × 1 PO4 PHOSPHATE ION × 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 1.70 Å R-free 0.264

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 p2-NC

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 P; UniProt 374–381 Not recorded protease, tethered dimer × 1 (P03369) BME BETA-MERCAPTOETHANOL × 1 EDO 1,2-ETHANEDIOL × 3 GOL GLYCEROL × 3 ACT ACETATE ION × 1 PO4 PHOSPHATE ION × 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 1.70 Å R-free 0.264

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 P; PDBConstruct 1–8; UniProt 374–381

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 4eq0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4eq0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4eq0
Deposition date deposition_date2012-04-17
Structure title titleCrystal Structure of inactive single chain variant of HIV-1 Protease in Complex with the substrate p2-NC
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_guinier18.07
Radius of gyration Rg (electron density) rg_electron17.01
Forward intensity I(0) i08576980.00
Molecular weight molecular_weight22628.0 kDa
Excluded volume excluded_volume28841 ų
Envelope volume envelope_volume32140 ų
Hydration-shell volume shell_volume16092 ų
Envelope diameter envelope_diameter56.7
Shell Rg shell_rg22.74
Envelope Rg envelope_rg17.23
Shape Rg shape_rg17.04
Total Rg total_rg17.87
Total atoms total_atoms1586
Residues n_residues205
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 dmax57.8
Rg (real space) rg_real18.03
Rg uncertainty (real space) rg_real_error0.30
I(0) (real space) i0_real8.5770e+06
I(0) uncertainty (real space) i0_real_error1.0180e+05
Rg (reciprocal space) rg_reciprocal18.04
I(0) (reciprocal space) i0_reciprocal8577000.0000
Solution quality estimate total_estimate0.7236
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.3
Skewness Skewness skewness0.318
Kurtosis Kurtosis kurtosis-0.301
Angular range angular_range— – 0.4400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3139000.0000
Real-space data points n_real_points75
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.861; Stabil: 1.000; Sysdev: 0.275; Positv: 1.000; Valcen: 0.999; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4eq0A01
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_id4eq0A02
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)