locus-tag	class	description
RINGS_41	PF05257	CHAP domain
RINGS_41	PF01476	LysM domain
RINGS_55	PF01367	5'-3' exonuclease, C-terminal SAM fold
RINGS_55	PF02739	5'-3' exonuclease, N-terminal resolvase-like domain
RINGS_55	PF00476	DNA polymerase family A