CATH Classification

Domain Context

CATH Clusters

Superfamily Yeast DNA topoisomerase - domain 1
Functional Family DNA topoisomerase I

Enzyme Information

5.6.2.2
DNA topoisomerase.
based on mapping to UniProt P04786
ATP-independent breakage of single-stranded DNA, followed by passage and rejoining.
-!- These enzymes bring 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 5.6.2.3. -!- Formerly EC 5.99.1.2.

UniProtKB Entries (1)

P04786
TOP1_YEAST
Saccharomyces cerevisiae S288C
DNA topoisomerase 1

PDB Structure

PDB 1OIS
External Links
Method X-RAY DIFFRACTION
Organism Saccharomyces
Primary Citation
A 26 kDa yeast DNA topoisomerase I fragment: crystallographic structure and mechanistic implications.
Lue, N., Sharma, A., Mondragon, A., Wang, J.C.
Structure