locus-tag	class	description
B1_20	PF04679	ATP dependent DNA ligase C terminal region        
B1_20	PF01068	ATP dependent DNA ligase domain
B1_20	PF04675	DNA ligase N terminus
B1_22	PF01367	5'-3' exonuclease, C-terminal SAM fold
B1_22	PF02739	5'-3' exonuclease, N-terminal resolvase-like domain
B1_22	PF00476	DNA polymerase family A