1bi4

CATALYTIC DOMAIN OF HIV-1 INTEGRASE

Method: X-RAY DIFFRACTION Dmax: 82.9 Å Quality: GOOD

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

INTEGRASE

Human immunodeficiency virus 1

UniProt P12497

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 1196–1355 Chain B; UniProt 1196–1355 Chain C; UniProt 1196–1355 Fragment:CATALYTIC CORE DOMAIN 50 - 212 Mutation:F185H No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 7.5;435 MM SODIUM CITRATE, 50 MM HEPES-HCL, PH 7.5, 7.5 MM DTT, PROTEIN CONCENTRATION, 0.13 MM Resolution 2.50 Å R-free 0.271

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.

163 other PDB entries and 211 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1N5
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–160; UniProt 1196–1355 Author chain C; PDBConstruct 1–160; UniProt 1196–1355 Author chain B; PDBConstruct 1–160; UniProt 1196–1355

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 1bi4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1bi4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1bi4
Deposition date deposition_date1998-06-22
Structure title titleCATALYTIC DOMAIN OF HIV-1 INTEGRASE
Keywords keywordsDNA INTEGRATION, AIDS, POLYPROTEIN, HYDROLASE, ENDONUCLEASE, POLYNUCLEOTIDYL TRANSFERASE, DNA BINDING (VIRAL); DNA INTEGRATION
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier26.72
Radius of gyration Rg (electron density) rg_electron26.04
Forward intensity I(0) i038772400.00
Molecular weight molecular_weight48820.0 kDa
Excluded volume excluded_volume61467 ų
Envelope volume envelope_volume76100 ų
Hydration-shell volume shell_volume25366 ų
Envelope diameter envelope_diameter86.5
Shell Rg shell_rg32.29
Envelope Rg envelope_rg26.02
Shape Rg shape_rg26.03
Total Rg total_rg26.77
Total atoms total_atoms3441
Residues n_residues445
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 dmax82.9
Rg (real space) rg_real26.81
Rg uncertainty (real space) rg_real_error0.47
I(0) (real space) i0_real3.8770e+07
I(0) uncertainty (real space) i0_real_error5.3940e+05
Rg (reciprocal space) rg_reciprocal26.79
I(0) (reciprocal space) i0_reciprocal38770000.0000
Solution quality estimate total_estimate0.8894
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.7
Skewness Skewness skewness0.383
Kurtosis Kurtosis kurtosis-0.583
Angular range angular_range— – 0.2950 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7869000.0000
Real-space data points n_real_points60
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.904; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.932; Smooth: 0.913

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1bi4a_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.3 — Ribonuclease H-like
Family Family familyc.55.3.2 — Retroviral integrase, catalytic domain
Domain ID domain_idd1bi4b_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.3 — Ribonuclease H-like
Family Family familyc.55.3.2 — Retroviral integrase, catalytic domain
Domain ID domain_idd1bi4c_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.3 — Ribonuclease H-like
Family Family familyc.55.3.2 — Retroviral integrase, catalytic domain

CATH v4.4 (3 domains)

Domain ID domain_id1bi4A00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H
Domain ID domain_id1bi4B00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H
Domain ID domain_id1bi4C00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H

8. Citations (2)

9. Files and Curves (10)