pfam08272: Zn_Ribbon_Topo (This model is not part of the current CDD release)
Topoisomerase I zinc-ribbon-like
Some Proteobacteria topoisomerase I contain two zinc-ribbon-like domains at the C-terminus that structurally homologous to pfam01396. However, this domain no longer bind zinc. Indeed, only one of the four cysteine residues remains.