1b6l

HIV-1 PROTEASE COMPLEXED WITH MACROCYCLIC PEPTIDOMIMETIC INHIBITOR 4

Method: X-RAY DIFFRACTION Dmax: 58.7 Å Quality: GOOD

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

RETROPEPSIN

OrganismNot specified

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:GLN7LYS LEU33ILE CYS67ABA CYS95ABA GLN107LYS LEU133ILE CYS167ABA CYS195ABA Non-standard monomer:Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 3 PI4 1-[2-(8-CARBAMOYLMETHYL-6,9-DIOXO-2-OXA-7,10-DIAZA-BICYCLO[11.2.2]HEPTADECA- 1(16),13(17),14-TRIEN-11-YL)-2-HYDROXY-ETHYL]-PIPERIDINE-2-CARBOXYLIC ACID TERT-BUTYLAMIDE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 5.5;0.1 M ACETATE BUFFER PH 5.5 AND 30-60% AMMONIUM SULFATE Resolution 1.75 Å R-free 0.226

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 57–155 Author chain B; 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 1b6l

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1b6l
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1b6l
Deposition date deposition_date1999-01-17
Structure title titleHIV-1 PROTEASE COMPLEXED WITH MACROCYCLIC PEPTIDOMIMETIC INHIBITOR 4
Keywords keywordsCOMPLEX (ACID PROTEINASE-PEPTIDE), 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_guinier18.46
Radius of gyration Rg (electron density) rg_electron17.17
Forward intensity I(0) i08170410.00
Molecular weight molecular_weight21997.0 kDa
Excluded volume excluded_volume28039 ų
Envelope volume envelope_volume31688 ų
Hydration-shell volume shell_volume15775 ų
Envelope diameter envelope_diameter58.2
Shell Rg shell_rg22.96
Envelope Rg envelope_rg17.48
Shape Rg shape_rg17.16
Total Rg total_rg18.22
Total atoms total_atoms1546
Residues n_residues194
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 dmax58.7
Rg (real space) rg_real18.43
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real8.1700e+06
I(0) uncertainty (real space) i0_real_error9.3130e+04
Rg (reciprocal space) rg_reciprocal18.43
I(0) (reciprocal space) i0_reciprocal8170000.0000
Solution quality estimate total_estimate0.8136
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.9
Skewness Skewness skewness0.314
Kurtosis Kurtosis kurtosis-0.348
Angular range angular_range— – 0.4300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3498000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.859; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1b6la_
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_idd1b6lb_
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_id1b6lA00
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_id1b6lB00
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)