title: Analogues of folate antagonists as affinity and fluorescent probes of dihydrofolate reductase structure and function.
mesh_terms: D000345:Affinity Labels / Q000378:metabolism*; D000818:Animals; D005492:Folic Acid / Q000031:analogs & derivatives* / Q000378:metabolism; D007939:Leukemia L1210 / Q000201:enzymology; D008239:Lysine; D008727:Methotrexate / Q000031:analogs & derivatives; D051379:Mice; D009952:Ornithine; D013762:Tetrahydrofolate Dehydrogenase / Q000032:analysis / Q000378:metabolism*; D014961:X-Ray Diffraction
chemical_list: D000345:Affinity Labels; D005492:Folic Acid; D009952:Ornithine; D013762:Tetrahydrofolate Dehydrogenase; D008239:Lysine; D008727:Methotrexate