This family includes YbcO (pdbe:3G27), a putative nuclease from E. coli [1]. Proteins in the entry have been predicted to have the His-Me finger nuclease domain and may act as a Recombinase that participates in DNA repair and replication [2].

1: Classification of the treble clef zinc finger: noteworthy lessons for structure and function evolution. Kaur G, Subramanian S; Sci Rep. 2016;6:32070. PMID:27562564

2: Systematic classification of the His-Me finger superfamily. Jablonska J, Matelska D, Steczkiewicz K, Ginalski K; Nucleic Acids Res. 2017;45:11479-11494. PMID:29040665