title: T4 bacteriophage-specific dihydrofolate reductase: purification to homogeneity by affinity chromatography.
mesh_terms: D000180:Acrylic Resins; D000630:Aminopterin / Q000138:chemical synthesis; D001665:Binding Sites; D055598:Chemical Phenomena; D011232:Chemical Precipitation; D002621:Chemistry; D002845:Chromatography; D002848:Chromatography, DEAE-Cellulose; D003090:Coliphages / Q000201:enzymology*; D004586:Electrophoresis; D004589:Electrophoresis, Disc; D004926:Escherichia coli / Q000201:enzymology*; D005021:Ethylamines; D005493:Folic Acid Antagonists; D005561:Formates / Q000138:chemical synthesis; D008727:Methotrexate; D008970:Molecular Weight; D000644:Quaternary Ammonium Compounds; D013307:Streptomycin; D013431:Sulfates; D013762:Tetrahydrofolate Dehydrogenase / Q000302:isolation & purification*
chemical_list: D000180:Acrylic Resins; D005021:Ethylamines; D005493:Folic Acid Antagonists; D005561:Formates; D000644:Quaternary Ammonium Compounds; D013431:Sulfates; D013762:Tetrahydrofolate Dehydrogenase; D000630:Aminopterin; D013307:Streptomycin; D008727:Methotrexate