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1n3j

Structure and Substrate of a Histone H3 Lysine Methyltransferase from Paramecium Bursaria Chlorella Virus 1

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Histone H3 Lysine Methyltransferase

Paramecium bursaria Chlorella virus 1

UniProt O41094

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
1n3j 3kma 3kmj

3 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3kmt 3kmt 3kmt 3kmt 3kmt

5 assemblies

View Construct and Data Evidence
UniProt name O41094_CHVP1
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–119； UniProt 1–119 Author chain B； PDBConstruct 1–119； UniProt 1–119

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_id1n3j
Deposition date deposition_date2002-10-28
Structure title titleStructure and Substrate of a Histone H3 Lysine Methyltransferase from Paramecium Bursaria Chlorella Virus 1
Keywords keywordsBeta barrel, homodimer, TRANSFERASE; TRANSFERASE
Experimental Method methodSOLUTION NMR
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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.

1n3j__assembly_1__model_1

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

Download this curve (.dat)

1n3j__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1n3j__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）20.85 Å
Rg (electron density)19.87 Å
Total Rg20.68 Å
Atom count3814
Residues238
Excluded volume34045 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1n3j__assembly_1__model_1 dimeric （2） 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 (1)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1n3ja_
Class classb — All beta proteins
Fold Fold foldb.85 — beta-clip
Superfamily Superfamily superfamilyb.85.7 — SET domain
Family Family familyb.85.7.2 — Viral histone H3 Lysine 27 Methyltransferase
Domain ID domain_idd1n3jb_
Class classb — All beta proteins
Fold Fold foldb.85 — beta-clip
Superfamily Superfamily superfamilyb.85.7 — SET domain
Family Family familyb.85.7.2 — Viral histone H3 Lysine 27 Methyltransferase

CATH v4.4 (2 domains)

Domain ID domain_id1n3jA00
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology270 — Beta-clip-like
Homologous superfamily homologous superfamily10 — SET domain
Domain ID domain_id1n3jB00
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology270 — Beta-clip-like
Homologous superfamily homologous superfamily10 — SET domain
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7. Citations (1)