locus-tag	class	description
BMBtp4_2	COG1802	Transcriptional regulator
BMBtp4_2	COG4626	Terminase
BMBtp4_22	COG0582	viral genome integration into host DNA
BMBtp4_29	COG1396	sequence-specific DNA binding
BMBtp4_44	COG0582	viral genome integration into host DNA