CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
 
	 | 
    1 | Mainly Alpha | 
 
	 | 
    1.10 | Orthogonal Bundle | 
 
	 | 
    1.10.290 | Topoisomerase I; domain 4 | 
 
	 | 
    1.10.290.10 | Topoisomerase I, domain 4 | 
Domain Context
CATH Clusters
| Superfamily | Topoisomerase I, domain 4 | 
| Functional Family | DNA topoisomerase 1 | 
Enzyme Information
| 5.6.2.2 | 
							 DNA topoisomerase. 
							based on mapping to UniProt P9WG49 		
							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)
| P9WG49 | 
						 TOP1_MYCTU 
						Mycobacterium tuberculosis H37Rv 
						DNA topoisomerase 1 
					 | 
				
PDB Structure
| PDB | 5D5H | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | |
| Primary Citation | 
					 Insights from the Structure of Mycobacterium tuberculosis Topoisomerase I with a Novel Protein Fold. 
					    
					    J.Mol.Biol. 
					    
					 | 
			
