CATH Classification

Domain Context

CATH Clusters

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

Enzyme Information

5.99.1.2
DNA topoisomerase.
based on mapping to UniProt P11387
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)

P11387
TOP1_HUMAN
Homo sapiens
DNA topoisomerase 1

PDB Structure

PDB 1RR8
External Links
Method X-RAY DIFFRACTION
Organism Spodoptera
Primary Citation
Mechanisms of camptothecin resistance by human topoisomerase I mutations
Chrencik, J.E., Staker, B.L., Burgin, A.B., Pourquier, P., Pommier, Y., Stewart, L., Redinbo, M.R.
J.Mol.Biol.