Accession ID Name Pfam Type
PF21338 Bacterial DNA topoisomerase IB, N-terminal domain domain

This domain is found at the N-terminal end of Type I topoisomerase from Deinococcus radiodurans and similar bacterial sequences. This small-sized protein modify DNA topology by cleaving and resealing one strand of duplex DNA. This domain comprises three alpha-helices plus a five strand antiparallel beta-sheet [1]. It is found associated with Pfam:PF01028.
Pfam Range: 46-94 DPAM-Pfam Range: 27-105
Uniprot ID: A0A0Q5P5A5
Pfam Range: 45-93 DPAM-Pfam Range: 25-103
Uniprot ID: A0A142XC10
Pfam Range: 21-69 DPAM-Pfam Range: 3-80
Uniprot ID: S4A4N7

References

1: Crystal structure of a bacterial type IB DNA topoisomerase reveals a preassembled active site in the absence of DNA. Patel A, Shuman S, Mondragon A; J Biol Chem. 2006;281:6030-6037. PMID:16368685