locus-tag	class	description
HOR04_gp03	COG4695	Portal protein
HOR04_gp26	COG1961	COG1961 Site-specific recombinases, DNA invertase Pin homologs
HOR04_gp36	COG4974	Belongs to the 'phage' integrase family
HOR04_gp44	COG2176	DNA-directed DNA polymerase activity
HOR04_gp44	COG5002	protein histidine kinase activity