3nfa

Structural basis for a new mechanism of inhibition of HIV integrase identified by fragment screening and structure based design

Method: X-RAY DIFFRACTION Dmax: 63.8 Å Quality: GOOD

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

Integrase

Human immunodeficiency virus 1

UniProt Q76353

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 50–212 Chain B; UniProt 50–212 Fragment:catalytic domain, residues 50-212 Mutation:F185H, C56S, F139D SO4 SULFATE ION × 8 CBJ 6-[(5-bromo-2,3-dioxo-2,3-dihydro-1H-indol-1-yl)methyl]-2,3-dihydro-1,4-benzodioxine-5-carboxylic acid × 4 ACY ACETIC ACID × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.3;293 K;1.7M ammonium sulfate, 0.1M sodium acetate pH 5.3, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.95 Å R-free 0.204

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.

103 other PDB entries and 114 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q76353_9HIV1
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 21–183; UniProt 50–212 Author chain B; PDBConstruct 21–183; UniProt 50–212

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 3nfa

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3nfa
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3nfa
Deposition date deposition_date2010-06-10
Structure title titleStructural basis for a new mechanism of inhibition of HIV integrase identified by fragment screening and structure based design
Keywords keywordsintegrase, 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_guinier19.62
Radius of gyration Rg (electron density) rg_electron18.48
Forward intensity I(0) i023210100.00
Molecular weight molecular_weight35611.0 kDa
Excluded volume excluded_volume43908 ų
Envelope volume envelope_volume49744 ų
Hydration-shell volume shell_volume21702 ų
Envelope diameter envelope_diameter64.0
Shell Rg shell_rg25.59
Envelope Rg envelope_rg18.81
Shape Rg shape_rg18.49
Total Rg total_rg19.39
Total atoms total_atoms2482
Residues n_residues298
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 dmax63.8
Rg (real space) rg_real19.46
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real2.3210e+07
I(0) uncertainty (real space) i0_real_error2.8660e+05
Rg (reciprocal space) rg_reciprocal19.48
I(0) (reciprocal space) i0_reciprocal23210000.0000
Solution quality estimate total_estimate0.8764
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.1
Skewness Skewness skewness0.099
Kurtosis Kurtosis kurtosis-0.403
Angular range angular_range— – 0.4050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7000000.0000
Real-space data points n_real_points72
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.798; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3nfaa_
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_idd3nfab_
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 (2 domains)

Domain ID domain_id3nfaA00
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_id3nfaB00
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 (1)

9. Files and Curves (10)