11YY | pdb_000011yy

E.Coli DNA Topoisomerase 3 in complex with an 8mer ssDNA oligo ACTGACTT

PDB DOI: https://doi.org/10.2210/pdb11YY/pdb
NAKB: 11YY

Classification: ISOMERASE/DNA
Organism(s): Escherichia coli, synthetic construct
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2026-03-19 Released: 2026-04-29
Deposition Author(s): Tan, K., Tse Dinh, Y.C.
Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.20 Å
R-Value Free:
0.236 (Depositor), 0.232 (DCC)
R-Value Work:
0.217 (Depositor), 0.218 (DCC)
R-Value Observed:
0.218 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

E.Coli DNA Topoisomerase 3 in complex with an 8mer ssDNA oligo ACTGACTT

Tan, K., Tse Dinh, Y.C.

To be published.

Macromolecule Content

Total Structure Weight: 75.08 kDa
Atom Count: 5,213
Modeled Residue Count: 628
Deposited Residue Count: 648
Unique protein chains: 1
Unique nucleic acid chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA topoisomerase 3	A	640	Escherichia coli	Mutation(s): 0 Gene Names: topB, b1763, JW1752 EC: 5.6.2.1
UniProt
Find proteins for P14294 (Escherichia coli (strain K12)) Explore P14294 Go to UniProtKB: P14294
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P14294
Sequence Annotations Expand
Reference Sequence

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Molecule	Chains	Length	Organism
Entity ID: 2
DNA (5'-D(PAPCPTPGPAPCPTPT)-3')	B	8	synthetic construct
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
SIN Query on SIN Download:Ideal Coordinates CCD File SDF format, chain D [auth A] MOL2 format, chain D [auth A] mmCIF format, chain D [auth A]	D [auth A]	SUCCINIC ACID C₄ H₆ O₄ KDYFGRWQOYBRFD-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Interactions & Density Focus chain D [auth A]
MLA Query on MLA Download:Ideal Coordinates CCD File SDF format, chain I [auth B] MOL2 format, chain I [auth B] mmCIF format, chain I [auth B]	I [auth B]	MALONIC ACID C₃ H₄ O₄ OFOBLEOULBTSOW-UHFFFAOYSA-N		Interactions Focus chain I [auth B] Interactions & Density Focus chain I [auth B]
EDO Query on EDO Download:Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain E [auth A] SDF format, chain C [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain E [auth A] MOL2 format, chain C [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain E [auth A] mmCIF format, chain C [auth A]	C [auth A], E [auth A], F [auth A], G [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Interactions & Density Focus chain C [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A]
CL Query on CL Download:Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A] mmCIF format, chain H [auth A]	H [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]