locus-tag	class	description
HOS22_gp28	PF01367	5'-3' exonuclease, C-terminal SAM fold
HOS22_gp28	PF02739	5'-3' exonuclease, N-terminal resolvase-like domain
HOS22_gp28	PF00476	DNA polymerase family A
HOS22_gp28	PF09281	Taq polymerase, exonuclease