CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.90 | Alpha-Beta Complex |
|
3.90.15 | Topoisomerase I; Chain A, domain 3 |
|
3.90.15.10 | Topoisomerase I; Chain A, domain 3 |
Domain Context
CATH Clusters
| Superfamily | Topoisomerase I; Chain A, domain 3 |
| Functional Family | DNA topoisomerase I |
Enzyme Information
| 5.6.2.2 |
DNA topoisomerase.
based on mapping to UniProt P11387
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)
| P11387 |
TOP1_HUMAN
Homo sapiens
DNA topoisomerase 1
|
PDB Structure
| PDB | 1EJ9 |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | Spodoptera |
| Primary Citation |
Novel insights into catalytic mechanism from a crystal structure of human topoisomerase I in complex with DNA.
Biochemistry
|
