4b74

Discovery of an allosteric mechanism for the regulation of HCV NS3 protein function

Method: X-RAY DIFFRACTION Dmax: 113.0 Å Quality: GOOD

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

NON-STRUCTURAL PROTEIN 4A, SERINE PROTEASE NS3

HEPATITIS C VIRUS (ISOLATE BK)

UniProt P26663

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 1678–1690 Chain A; UniProt 1029–1657 Chain B; UniProt 1678–1690 Chain B; UniProt 1029–1657 Fragment:RESIDUES 1678-1690 AND 1029-1657 1LH (2S)-4-[(2-ammonioethyl)amino]-N-[(1R)-1-(4-chloro-2-fluoro-3-phenoxyphenyl)propyl]-4-oxobutan-2-aminium × 2 X-RAY DIFFRACTION X-ray crystallization conditions:pH 6.5;0.2 M 2-(N-MORPHOLINO)ETHANESULFONIC ACID (MES)-NAOH PH 6.6, 14-20% W/V POLYETHYLENE GLYCOL (PEG) 6000, 10% W/V 2-METHYL-2,4-PENTANDIOL (MPD) Resolution 2.18 Å R-free 0.243

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.

87 other PDB entries and 151 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POLG_HCVBK
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 22–34; UniProt 1678–1690 Author chain A; PDBConstruct 38–666; UniProt 1029–1657 Author chain B; PDBConstruct 22–34; UniProt 1678–1690 Author chain B; PDBConstruct 38–666; UniProt 1029–1657

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 4b74

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4b74
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4b74
Deposition date deposition_date2012-08-16
Structure title titleDiscovery of an allosteric mechanism for the regulation of HCV NS3 protein function
Keywords keywordsHYDROLASE, HCV, HELICASE-PROTEASE, ALLOSTERIC POCKET, FUSION PROTEIN; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier34.14
Radius of gyration Rg (electron density) rg_electron33.37
Forward intensity I(0) i0298520000.00
Molecular weight molecular_weight137620.0 kDa
Excluded volume excluded_volume171960 ų
Envelope volume envelope_volume221050 ų
Hydration-shell volume shell_volume54335 ų
Envelope diameter envelope_diameter118.2
Shell Rg shell_rg40.91
Envelope Rg envelope_rg32.80
Shape Rg shape_rg33.38
Total Rg total_rg33.88
Total atoms total_atoms9716
Residues n_residues1287
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 dmax113.0
Rg (real space) rg_real34.04
Rg uncertainty (real space) rg_real_error0.76
I(0) (real space) i0_real2.9850e+08
I(0) uncertainty (real space) i0_real_error4.9060e+06
Rg (reciprocal space) rg_reciprocal34.10
I(0) (reciprocal space) i0_reciprocal298500000.0000
Solution quality estimate total_estimate0.8709
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.2
Skewness Skewness skewness0.295
Kurtosis Kurtosis kurtosis-0.138
Angular range angular_range— – 0.2300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha65620000.0000
Real-space data points n_real_points47
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.796; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.940

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 10 domains

CATH v4.4 (10 domains)

Domain ID domain_id4b74A01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily120
Domain ID domain_id4b74A02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4b74A03
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id4b74A04
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id4b74A05
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology820 — RNA Helicase; Chain A, domain 3
Homologous superfamily homologous superfamily10 — RNA Helicase Chain A , domain 3
Domain ID domain_id4b74B01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily120
Domain ID domain_id4b74B02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4b74B03
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id4b74B04
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id4b74B05
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology820 — RNA Helicase; Chain A, domain 3
Homologous superfamily homologous superfamily10 — RNA Helicase Chain A , domain 3

8. Citations (1)

9. Files and Curves (10)