1n49

Viability of a Drug-Resistant HIV-1 Protease Variant: Structural Insights for Better Anti-Viral Therapy

Method: X-RAY DIFFRACTION Dmax: 78.1 Å Quality: GOOD

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

Protease

Human immunodeficiency virus 1

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 57–155 Chain B; UniProt 57–155 Mutation:Q7K, D25N, V82A RIT RITONAVIR × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.2;sodium phosphate, sodium citrate, ammonium sulphate, pH 6.2, VAPOR DIFFUSION, HANGING DROP Resolution 2.20 Å R-free 0.284
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 57–155 Chain D; UniProt 57–155 Mutation:Q7K, D25N, V82A RIT RITONAVIR × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.2;sodium phosphate, sodium citrate, ammonium sulphate, pH 6.2, VAPOR DIFFUSION, HANGING DROP Resolution 2.20 Å R-free 0.284

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 95 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 57–155 Author chain B; PDBConstruct 1–99; UniProt 57–155 Author chain C; PDBConstruct 1–99; UniProt 57–155 Author chain D; PDBConstruct 1–99; UniProt 57–155

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 1n49

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1n49
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1n49
Deposition date deposition_date2002-10-30
Structure title titleViability of a Drug-Resistant HIV-1 Protease Variant: Structural Insights for Better Anti-Viral Therapy
Keywords keywordsHIV-1 protease, drug resistance, substrate recognition, inhibitor binding, HYDROLASE, 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_guinier24.02
Radius of gyration Rg (electron density) rg_electron23.18
Forward intensity I(0) i027325800.00
Molecular weight molecular_weight41849.0 kDa
Excluded volume excluded_volume53186 ų
Envelope volume envelope_volume63214 ų
Hydration-shell volume shell_volume23041 ų
Envelope diameter envelope_diameter80.1
Shell Rg shell_rg29.62
Envelope Rg envelope_rg22.99
Shape Rg shape_rg23.21
Total Rg total_rg23.90
Total atoms total_atoms2944
Residues n_residues396
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 dmax78.1
Rg (real space) rg_real23.99
Rg uncertainty (real space) rg_real_error0.56
I(0) (real space) i0_real2.7330e+07
I(0) uncertainty (real space) i0_real_error4.5060e+05
Rg (reciprocal space) rg_reciprocal24.00
I(0) (reciprocal space) i0_reciprocal27330000.0000
Solution quality estimate total_estimate0.8981
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.6
Skewness Skewness skewness0.284
Kurtosis Kurtosis kurtosis-0.441
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha18150000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.901; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.976; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1n49a_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1n49b_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1n49c_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1n49d_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)

CATH v4.4 (4 domains)

Domain ID domain_id1n49A00
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_id1n49B00
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_id1n49C00
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_id1n49D00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases

8. Citations (5)

9. Files and Curves (10)