1ec2

HIV-1 protease in complex with the inhibitor BEA428

Method: X-RAY DIFFRACTION Dmax: 58.8 Å Quality: GOOD

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

HIV-1 PROTEASE

Human immunodeficiency virus 1

UniProt P03366

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 69–167 Chain B; UniProt 69–167 Fragment:FRAGMENT 69-167 BEJ N,N-[2,5-O-[DI-4-PYRIDIN-3-YL-BENZYL]-GLUCARYL]-DI-[VALYL-AMIDO-METHANE] × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.5;277 K;0.4 M Sodium chloride, 0.05 M MES, 0.02 % (W/V) sodium azide, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.00 Å R-free 0.245

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.

383 other PDB entries and 469 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1B1
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–99; UniProt 69–167 Author chain B; PDBConstruct 1–99; UniProt 69–167

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 1ec2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ec2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ec2
Deposition date deposition_date2000-01-25
Structure title titleHIV-1 protease in complex with the inhibitor BEA428
Keywords keywordsDimer, protein-inhibitor complex, 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_guinier18.14
Radius of gyration Rg (electron density) rg_electron17.17
Forward intensity I(0) i08047550.00
Molecular weight molecular_weight22359.0 kDa
Excluded volume excluded_volume28720 ų
Envelope volume envelope_volume31906 ų
Hydration-shell volume shell_volume15913 ų
Envelope diameter envelope_diameter60.6
Shell Rg shell_rg22.99
Envelope Rg envelope_rg17.48
Shape Rg shape_rg17.16
Total Rg total_rg18.20
Total atoms total_atoms1572
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 dmax58.8
Rg (real space) rg_real18.11
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real8.0480e+06
I(0) uncertainty (real space) i0_real_error9.3010e+04
Rg (reciprocal space) rg_reciprocal18.12
I(0) (reciprocal space) i0_reciprocal8048000.0000
Solution quality estimate total_estimate0.8053
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary21.4
Skewness Skewness skewness0.348
Kurtosis Kurtosis kurtosis-0.242
Angular range angular_range— – 0.4400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3254000.0000
Real-space data points n_real_points75
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.822; Stabil: 0.999; 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 (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1ec2a_
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_idd1ec2b_
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_id1ec2A00
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_id1ec2B00
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)