locus-tag	class	description
SEA_HEADNERD_45	PF01367	5'-3' exonuclease, C-terminal SAM fold
SEA_HEADNERD_45	PF02739	5'-3' exonuclease, N-terminal resolvase-like domain
SEA_HEADNERD_45	PF00476	DNA polymerase family A
SEA_HEADNERD_46	PF00709	Adenylosuccinate synthetase
SEA_HEADNERD_49	PF00692	dUTPase