arCOG00543 universal archaeal KH-domain/beta-lactamase-domain protein
This family of proteins is universal in the archaea and consistsof an N-terminal type-1 KH-domain (pfam00013) a central beta-lactamase-domain (pfam00753) with a C-terminal motif associated with RNA metabolism (pfam07521). KH-domains are associated with RNA-binding, so taken together, this protein is a likely metal-dependent RNAase. This family was defined as arCOG01782.
Jiyao W et al.(2023). "The conserved domain database in 2023.",