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1par

DNA RECOGNITION BY BETA-SHEETS IN THE ARC REPRESSOR-OPERATOR CRYSTAL STRUCTURE

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

PROTEIN (ARC REPRESSOR)

OrganismNot specified

UniProt P03050

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 4 DNA 2 ;DNA (5'-D(*TP*AP*TP*AP*GP*TP*AP*GP*AP*GP*TP*GP*CP*TP*TP*CP*T P*AP*TP*CP*AP*T)- 3') ; × 1 ;DNA (5'-D(*AP*AP*TP*GP*AP*TP*AP*GP*AP*AP*GP*CP*AP*CP*TP*CP*T P*AP*CP*TP*AP*T)- 3') ; × 1 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer
1arq 1arr 1b28 1myk 1myl 1myl 1myl 1nla 1qtg

9 assemblies

Homotetramer
1baz

1 assemblies

Other homooligomers

None

Heteromeric or nucleic-acid complex
1bdt 1par

2 assemblies

View Construct and Data Evidence
UniProt name RARC_BPP22
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–53； UniProt 1–53 Author chain B； PDBConstruct 1–53； UniProt 1–53 Author chain C； PDBConstruct 1–53； UniProt 1–53 Author chain D； PDBConstruct 1–53； UniProt 1–53

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_id1par
Deposition date deposition_date1994-03-22
Structure title titleDNA RECOGNITION BY BETA-SHEETS IN THE ARC REPRESSOR-OPERATOR CRYSTAL STRUCTURE
Keywords keywordsPROTEIN-DNA COMPLEX, DOUBLE HELIX, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
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.

1par__assembly_1__model_1

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

Download this curve (.dat)

1par__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.

1par__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）22.98 Å
Rg (electron density)22.05 Å
Total Rg22.80 Å
Atom count2608
Residues252
Excluded volume43698 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1par__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 (4)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1para_
Class classa — All alpha proteins
Fold Fold folda.43 — Ribbon-helix-helix
Superfamily Superfamily superfamilya.43.1 — Ribbon-helix-helix
Family Family familya.43.1.1 — Arc/Mnt-like phage repressors
Domain ID domain_idd1parb_
Class classa — All alpha proteins
Fold Fold folda.43 — Ribbon-helix-helix
Superfamily Superfamily superfamilya.43.1 — Ribbon-helix-helix
Family Family familya.43.1.1 — Arc/Mnt-like phage repressors
Domain ID domain_idd1parc_
Class classa — All alpha proteins
Fold Fold folda.43 — Ribbon-helix-helix
Superfamily Superfamily superfamilya.43.1 — Ribbon-helix-helix
Family Family familya.43.1.1 — Arc/Mnt-like phage repressors
Domain ID domain_idd1pard_
Class classa — All alpha proteins
Fold Fold folda.43 — Ribbon-helix-helix
Superfamily Superfamily superfamilya.43.1 — Ribbon-helix-helix
Family Family familya.43.1.1 — Arc/Mnt-like phage repressors

CATH v4.4 (4 domains)

Domain ID domain_id1parA00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1220 — Arc Repressor Mutant
Homologous superfamily homologous superfamily10 — Met repressor-like
Domain ID domain_id1parB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1220 — Arc Repressor Mutant
Homologous superfamily homologous superfamily10 — Met repressor-like
Domain ID domain_id1parC00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1220 — Arc Repressor Mutant
Homologous superfamily homologous superfamily10 — Met repressor-like
Domain ID domain_id1parD00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1220 — Arc Repressor Mutant
Homologous superfamily homologous superfamily10 — Met repressor-like
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7. Citations (1)