1.17.4.2	ribonucleoside-triphosphate reductase (thioredoxin)	BALB/3T3 cell	fibroblast cell, non-dividing cells expressing enzyme subunit p53R2, but not sunit R2 protein, have reduced dNTP levels if exposed to the enzyme--specific inhibitor hydroxyurea. After DNA damage, a slow, up to 4fold increase in p53R2 expression leads to 3fold increase in dNTP pools in G0/G1 cells	674765	
2.7.1.48	uridine/cytidine kinase	BALB/3T3 cell	-	663248	
3.1.1.52	phosphatidylinositol deacylase	BALB/3T3 cell	-	80969	
4.98.1.1	protoporphyrin ferrochelatase	BALB/3T3 cell	conversion of mesoporphyrin is dependent on the expression of ferrochelatase, since control Balb/3T3 cells have much lower expression of ferrochelatase than the ferrochelatase transfectants	678251