locus-tag	class	description
H20_0002	COG0582	viral genome integration into host DNA
H20_0021	COG2404	hydrolase activity, acting on ester bonds
H20_0048	COG1403	HNH endonuclease
H20_0054	COG3772	lysozyme
H20_0061	COG1802	Transcriptional regulator
H20_0061	COG4626	Terminase
H20_0064	COG0740	serine-type endopeptidase activity