locus-tag	class	description
	COG1179	involved in molybdopterin and THIamine biosynthesis family 1
	COG0692	Excises uracil residues from the DNA which can arise as a result of misincorporation of dUMP residues by DNA polymerase or due to deamination of cytosine
	COG0209	Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides
	COG1327	Negatively regulates transcription of bacterial ribonucleotide reductase nrd genes and operons by binding to NrdR- boxes
	COG0756	dUTP diphosphatase activity
	COG0258	In addition to polymerase activity, this DNA polymerase exhibits 5'-3' exonuclease activity
	COG0749	In addition to polymerase activity, this DNA polymerase exhibits 5'-3' exonuclease activity