locus-tag	class	description
PBI_RYAN_20	COG0739	heme binding
PBI_RYAN_25	COG0739	heme binding
PBI_RYAN_36	COG4974	Belongs to the 'phage' integrase family
PBI_RYAN_39	COG4974	Belongs to the 'phage' integrase family
PBI_RYAN_8	COG0740	serine-type endopeptidase activity