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1r9f

Crystal structure of p19 complexed with 19-bp small interfering RNA

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Core protein P19

Tomato bushy stunt virus

UniProt P11690

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–RNA Homooligomer Protein 2 RNA 4 5'-R(*CP*GP*UP*AP*CP*GP*CP*GP*GP*AP*AP*UP*AP*CP*UP*UP*CP*GP*AP*UP*U)-3' × 2 5'-R(*UP*CP*GP*AP*AP*GP*UP*AP*UP*UP*CP*CP*GP*CP*GP*UP*AP*CP*GP*UP*U)-3' × 2 SULFATE ION × 4 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1r9f

1 assemblies

View Construct and Data Evidence
UniProt name VP19_TBSVC
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 5–136； UniProt 27–158

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id1r9f
Deposition date deposition_date2003-10-28
Structure title titleCrystal structure of p19 complexed with 19-bp small interfering RNA
Keywords keywordsProtein-RNA complex, Dimer, double helix, Viral protein-RNA COMPLEX; Viral protein/RNA
Experimental Method methodX-RAY DIFFRACTION
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1r9f__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1r9f__assembly_1__model_1 | I(q)

10-2 10-1 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1r9f__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）20.91 Å
Rg (electron density)20.49 Å
Total Rg21.06 Å
Atom count3564
Residues314
Excluded volume57150 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1r9f__assembly_1__model_1 hexameric （6） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (5)

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1r9fa1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.255 — Tombusvirus P19 core protein, VP19
Superfamily Superfamily superfamilyd.255.1 — Tombusvirus P19 core protein, VP19
Family Family familyd.255.1.1 — Tombusvirus P19 core protein, VP19
Domain ID domain_idd1r9fa2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (1 domains)

Domain ID domain_id1r9fA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily180 — RNA silencing suppressor P19
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7. Citations (1)