Status	Description	Organism	Genes	References
	5'-Nucleotidase domain-containing protein	Clostridium symbiosum	GMC9-1036
	dGMP phosphatase	Escherichia coli	phoA
	dGMP 5'-phosphate phosphohydrolase	Escherichia coli	umpG
	5'-deoxynucleotidase YfbR	Shigella flexneri	G170L-2491