1k2b

Combining Mutations in HIV-1 Protease to Understand Mechanisms of Resistance

Method: X-RAY DIFFRACTION Dmax: 60.1 Å Quality: REASONABLE

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

PROTEASE RETROPEPSIN

Human immunodeficiency virus 1

UniProt P04587

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 501–599 Chain B; UniProt 501–599 Mutation:Q7K, l33I, L63I, C67A, C95A, N88D, L90M 0Q4 N-[(2R)-2-({N~5~-[amino(iminio)methyl]-L-ornithyl-L-valyl}amino)-4-methylpentyl]-L-phenylalanyl-L-alpha-glutamyl-L-alanyl-L-norleucinamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;20-50% Saturated Ammonium Sulphate, 10% DMSO, 0.25M citrate/0.5M phosphate buffer, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.70 Å R-free 0.278

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.

61 other PDB entries and 63 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1B5
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–99; UniProt 501–599 Author chain B; PDBConstruct 1–99; UniProt 501–599

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 1k2b

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1k2b
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1k2b
Deposition date deposition_date2001-09-26
Structure title titleCombining Mutations in HIV-1 Protease to Understand Mechanisms of Resistance
Keywords keywordsHIV-1 PROTEASE, 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_guinier17.74
Radius of gyration Rg (electron density) rg_electron17.02
Forward intensity I(0) i015958500.00
Molecular weight molecular_weight20635.0 kDa
Excluded volume excluded_volume20165 ų
Envelope volume envelope_volume31248 ų
Hydration-shell volume shell_volume15695 ų
Envelope diameter envelope_diameter60.5
Shell Rg shell_rg22.65
Envelope Rg envelope_rg17.35
Shape Rg shape_rg17.02
Total Rg total_rg17.70
Total atoms total_atoms1571
Residues n_residues198
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 dmax60.1
Rg (real space) rg_real17.72
Rg uncertainty (real space) rg_real_error0.23
I(0) (real space) i0_real1.5960e+07
I(0) uncertainty (real space) i0_real_error1.8210e+05
Rg (reciprocal space) rg_reciprocal17.72
I(0) (reciprocal space) i0_reciprocal15960000.0000
Solution quality estimate total_estimate0.6407
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.0
Skewness Skewness skewness0.369
Kurtosis Kurtosis kurtosis-0.263
Angular range angular_range— – 0.4500 −1
Current regularization parameter α current_alpha0.0244
Highest regularization parameter α highest_alpha6254000.0000
Real-space data points n_real_points76
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.787; Stabil: 1.000; Sysdev: 0.000; Positv: 1.000; Valcen: 0.966; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1k2ba_
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_idd1k2bb_
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 (2 domains)

Domain ID domain_id1k2bA00
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_id1k2bB00
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)