locus-tag	class	description
B3_18	IPR000977	DNA ligase, ATP-dependent
B3_18	IPR012309	DNA ligase, ATP-dependent, C-terminal
B3_18	IPR012310	DNA ligase, ATP-dependent, central
B3_18	IPR016059	DNA ligase, ATP-dependent, conserved site
B3_18	IPR012308	DNA ligase, ATP-dependent, N-terminal
B3_18	IPR036599	DNA ligase, ATP-dependent, N-terminal domain superfamily
B3_18	IPR012340	Nucleic acid-binding, OB-fold
B3_18	IPR036866	Ribonuclease Z/Hydroxyacylglutathione hydrolase-like
B3_20	IPR029060	PIN-like domain superfamily
B3_20	IPR008918	Helix-hairpin-helix motif, class 2
B3_20	IPR002298	DNA polymerase A
B3_20	IPR018320	DNA polymerase 1
B3_20	IPR020045	DNA polymerase I-like, H3TH domain
B3_20	IPR002421	5'-3' exonuclease, N-terminal
B3_20	IPR019760	DNA-directed DNA polymerase, family A, conserved site
B3_20	IPR036279	5'-3' exonuclease, C-terminal domain superfamily
B3_20	IPR012337	Ribonuclease H-like superfamily
B3_20	IPR020046	5'-3' exonuclease, alpha-helical arch, N-terminal
B3_20	IPR002562	3'-5' exonuclease domain
B3_20	IPR001098	DNA-directed DNA polymerase, family A, palm domain
B3_20	IPR036397	Ribonuclease H superfamily