1ng7

The Solution Structure of the Soluble Domain of Poliovirus 3A Protein

Method: SOLUTION NMR Dmax: 55.4 Å Quality: REASONABLE

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

Genome polyprotein [Core protein P3A]

Human poliovirus 1

UniProt P03300

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 1456–1514 Chain B; UniProt 1456–1514 Fragment:Poliovirus 3A-N No other associated polymer SOLUTION NMR NMR measurement conditions:pH 7;25 K;Ionic strength (raw mmCIF value) 20 mM potassium phosphate, 50 mM NaCl;Pressure ambient NMR measurement conditions:pH 7;25 K;Ionic strength (raw mmCIF value) 10 mM tris, 50 mM NaCl;Pressure ambient NMR sample composition:1-3 mM 3A-N U-95% 13C;U-99% 15N; 20mM phosphate buffer NA; 100% D2O | 100% D2O NMR sample composition:1-3 mM 3A-N U-99% 15N; 20mM phosphate buffer NA; 95% H2O, 5% D2O | 95% H2O/5% D2O NMR sample composition:1.5 mM 3A-N NA; 1.5 mM 3A-N U-95% 13C;U-99% 15N; 20mM phosphate buffer NA; 100% D2O | 100% D2O NMR sample composition:2 mM 3A-N U-99% 15N; 10 mM tris buffer NA; 95% H2O, 5% D2O | 95% H2O/5% D2O NMR sample composition:1-3 mM 3A-N U-95% 13C;U-99% 15N; 20mM phosphate buffer NA; 95% H2O, 5% D2O | 95% H2O/5% D2O Resolution not provided

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 250 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POLH_POL1M
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–60; UniProt 1456–1514 Author chain B; PDBConstruct 2–60; UniProt 1456–1514

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 1ng7

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ng7
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ng7
Deposition date deposition_date2002-12-16
Structure title titleThe Solution Structure of the Soluble Domain of Poliovirus 3A Protein
Keywords keywordshelical hairpin, unfolded domain, symmetric dimer, Viral protein; VIRAL PROTEIN
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier21.29
Radius of gyration Rg (electron density) rg_electron20.58
Forward intensity I(0) i0296680000.00
Molecular weight molecular_weight138060.0 kDa
Excluded volume excluded_volume171760 ų
Envelope volume envelope_volume102170 ų
Hydration-shell volume shell_volume30905 ų
Envelope diameter envelope_diameter96.3
Shell Rg shell_rg34.92
Envelope Rg envelope_rg27.81
Shape Rg shape_rg20.52
Total Rg total_rg21.65
Total atoms total_atoms19400
Residues n_residues1200
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 dmax55.4
Rg (real space) rg_real19.74
Rg uncertainty (real space) rg_real_error0.11
I(0) (real space) i0_real2.8170e+08
I(0) uncertainty (real space) i0_real_error2.7680e+06
Rg (reciprocal space) rg_reciprocal21.55
I(0) (reciprocal space) i0_reciprocal296700000.0000
Solution quality estimate total_estimate0.6815
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary17.9
Skewness Skewness skewness0.281
Kurtosis Kurtosis kurtosis-0.703
Angular range angular_range— – 0.3750 −1
Current regularization parameter α current_alpha2.3320
Highest regularization parameter α highest_alpha1832000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.002; Oscil: 0.992; Stabil: 0.987; Sysdev: 0.000; Positv: 1.000; Valcen: 0.925; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1ng7a1
Class classa — All alpha proteins
Fold Fold folda.178 — Soluble domain of poliovirus core protein 3a
Superfamily Superfamily superfamilya.178.1 — Soluble domain of poliovirus core protein 3a
Family Family familya.178.1.1 — Soluble domain of poliovirus core protein 3a
Domain ID domain_idd1ng7a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd1ng7b1
Class classa — All alpha proteins
Fold Fold folda.178 — Soluble domain of poliovirus core protein 3a
Superfamily Superfamily superfamilya.178.1 — Soluble domain of poliovirus core protein 3a
Family Family familya.178.1.1 — Soluble domain of poliovirus core protein 3a
Domain ID domain_idd1ng7b2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id1ng7A00
Class class6 — Special
Architecture architecture10 — Helix non-globular
Topology topology20 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily20 — Poliovirus 3A protein-like
Domain ID domain_id1ng7B00
Class class6 — Special
Architecture architecture10 — Helix non-globular
Topology topology20 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily20 — Poliovirus 3A protein-like

8. Citations (1)

9. Files and Curves (10)