title: Differentiating properties of the dihydrofolate reductases of amethopterin-resistant Streptococcus faecalis/Ak and the sensitive parent strain.
mesh_terms: D002850:Chromatography, Gel; D004352:Drug Resistance, Microbial; D013293:Enterococcus faecalis / Q000201:enzymology*; D066298:In Vitro Techniques; D007700:Kinetics; D008727:Methotrexate; D009154:Mutation; D009249:NADP; D013762:Tetrahydrofolate Dehydrogenase / Q000378:metabolism*
chemical_list: D009249:NADP; D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate