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1c7y

E.COLI RUVA-HOLLIDAY JUNCTION COMPLEX

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

HOLLIDAY JUNCTION DNA HELICASE RUVA

Escherichia coli

UniProt P0A809

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 4 DNA 32 ;DNA (5'-D(P*DAP*DAP*DGP*DTP*DTP*DGP*DGP*DGP*DAP*DTP*DTP*DGP*DT)-3') ; × 4 ;DNA (5'-D(P*DCP*DTP*DGP*DTP*DGP*DTP*DGP*DTP*DAP*DAP*DGP*DC)-3') ; × 4 ;DNA (5'-D(P*DGP*DCP*DTP*DTP*DAP*DCP*DAP*DCP*DAP*DCP*DAP*DGP*DA)-3') ; × 4 ;DNA (5'-D(P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DGP*DAP*DA)-3') ; × 4 ;DNA (5'-D(P*DTP*DTP*DCP*DAP*DCP*DCP*DCP*DTP*DAP*DAP*DCP*DCP*DA)-3') ; × 4 ;DNA (5'-D(P*DGP*DAP*DCP*DAP*DCP*DAP*DCP*DAP*DTP*DTP*DCP*DG)-3') ; × 4 ;DNA (5'-D(P*DCP*DGP*DAP*DAP*DTP*DGP*DTP*DGP*DTP*DGP*DTP*DCP*DT)-3') ; × 4 ;DNA (5'-D(P*DCP*DAP*DAP*DTP*DCP*DCP*DCP*DAP*DAP*DCP*DTP*DT)-3') ; × 4 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer
1cuk 1d8l 1hjp

3 assemblies

Other homooligomers

None

Heteromeric or nucleic-acid complex
1bdx 1c7y

2 assemblies

View Construct and Data Evidence
UniProt name RUVA_ECOLI
Isoform —
PDB entities 9
Chains and sequence ranges Author chain A； PDBConstruct 1–203； UniProt 1–203

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_id1c7y
Deposition date deposition_date2000-04-03
Structure title titleE.COLI RUVA-HOLLIDAY JUNCTION COMPLEX
Keywords keywordshelix-hairpin-helix, protein-DNA complex, homologous recombination, Holliday junction, RECOMBINATION-DNA COMPLEX; RECOMBINATION/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.

1c7y__assembly_1__model_1

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

Download this curve (.dat)

1c7y__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1c7y__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）33.22 Å
Rg (electron density)31.64 Å
Total Rg32.31 Å
Atom count8180
Residues896
Excluded volume140470 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1c7y__assembly_1__model_1 36-meric （36） 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 (9)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1c7ya1
Class classa — All alpha proteins
Fold Fold folda.5 — RuvA C-terminal domain-like
Superfamily Superfamily superfamilya.5.1 — DNA helicase RuvA subunit, C-terminal domain
Family Family familya.5.1.1 — DNA helicase RuvA subunit, C-terminal domain
Domain ID domain_idd1c7ya2
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.2 — RuvA domain 2-like
Family Family familya.60.2.1 — DNA helicase RuvA subunit, middle domain
Domain ID domain_idd1c7ya3
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.2 — DNA helicase RuvA subunit, N-terminal domain

CATH v4.4 (3 domains)

Domain ID domain_id1c7yA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1c7yA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily20 — 5' to 3' exonuclease, C-terminal subdomain
Domain ID domain_id1c7yA03
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily10 — Ubiquitin-associated (UBA) domain
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7. Citations (1)