Hydroxymethyl and Formyl TransferasesNucleotide DeaminasesPhosphoribosylaminoimidazolecarboxamide FormyltransferaseAminoimidazole CarboxamideRibonucleotidesRibonucleotide ReductasesMultienzyme ComplexesAMP-Activated Protein KinasesRibonucleoside Diphosphate ReductasePhosphoribosylglycinamide FormyltransferaseCytidine DiphosphateRibonucleosidesHydroxyureaDeoxyribonucleotidesThiosemicarbazonesFree RadicalsAcridinesEscherichia coliAmides