CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.140
Functional Family DNA topoisomerase 1

Enzyme Information

5.99.1.2
DNA topoisomerase.
based on mapping to UniProt P46799
ATP-independent breakage of single-stranded DNA, followed by passage and rejoining.
-!- Brings about the conversion of one topological isomer of DNA into another, e.g. the relaxation of superhelical turns in DNA, the interconversion of simple and knotted rings of single-stranded DNA, and the intertwisting of single-stranded rings of complementary sequences (cf. EC 5.99.1.3).

UniProtKB Entries (1)

P46799
TOP1_THEMA
Thermotoga maritima MSB8
DNA topoisomerase 1

PDB Structure

PDB 2GAI
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal Structure of Full Length Topoisomerase I from Thermotoga maritima
Hansen, G., Harrenga, A., Wieland, B., Schomburg, D., Reinemer, P.
J.Mol.Biol.