Accession ID	Name	Pfam Type
PF01028	Eukaryotic DNA topoisomerase I, catalytic core	domain

Topoisomerase I promotes the relaxation of DNA superhelical tension by introducing a transient single-stranded break in duplex DNA and are vital for the processes of replication, transcription, and recombination [2].

Pfam Range: 456-682 DPAM-Pfam Range: 473-600

Uniprot ID: D7MF62

Pfam Range: 264-496 DPAM-Pfam Range: 286-411

Uniprot ID: W5LQR5

Pfam Range: 213-443 DPAM-Pfam Range: 219-367

Uniprot ID: E6N697

References

1: The mechanisms of DNA topoisomerases. Roca J; Trends Biochem Sci 1995;20:156-160. PMID:7770916

2: Crystal structures of human topoisomerase I in covalent and noncovalent complexes with DNA. Redinbo MR, Stewart L, Kuhn P, Champoux JJ, Hol WG; Science 1998;279:1504-1513. PMID:9488644