locus-tag	class	description
HOR87_gp21	IPR002562	3'-5' exonuclease domain
HOR87_gp21	IPR020046	5'-3' exonuclease, alpha-helical arch, N-terminal
HOR87_gp21	IPR002421	5'-3' exonuclease, N-terminal
HOR87_gp21	IPR036279	5'-3' exonuclease, C-terminal domain superfamily
HOR87_gp21	IPR019760	DNA-directed DNA polymerase, family A, conserved site
HOR87_gp21	IPR001098	DNA-directed DNA polymerase, family A, palm domain
HOR87_gp21	IPR020045	DNA polymerase I-like, H3TH domain
HOR87_gp21	IPR018320	DNA polymerase 1
HOR87_gp21	IPR002298	DNA polymerase A
HOR87_gp21	IPR008918	Helix-hairpin-helix motif, class 2
HOR87_gp21	IPR029060	PIN-like domain superfamily
HOR87_gp21	IPR012337	Ribonuclease H-like superfamily
HOR87_gp21	IPR036397	Ribonuclease H superfamily