2.7.4.12	5-hydroxymethyl-dCMP	dGMP or dTMP as substrate	
2.7.4.12	dGMP	dTMP or 5-hydroxymethyl-dCMP as substrate	
2.7.4.12	dTMP	dGMP or 5-hydroxymethyl-dCMP as substrate	
2.7.4.12	additional information	tryptic digestion inactivates