title: Purification of guanosine triphosphate cyclohydrolase I and dihydrofolate reductase on a dihydrofolate-Sepharose affinity column.
mesh_terms: D000619:Aminohydrolases / Q000302:isolation & purification*; D000818:Animals; D002846:Chromatography, Affinity; D002847:Chromatography, Agarose; D004926:Escherichia coli / Q000201:enzymology; D006136:GTP Cyclohydrolase / Q000302:isolation & purification*; D008099:Liver / Q000201:enzymology; D051381:Rats; D013762:Tetrahydrofolate Dehydrogenase / Q000302:isolation & purification*
chemical_list: D013762:Tetrahydrofolate Dehydrogenase; D000619:Aminohydrolases; D006136:GTP Cyclohydrolase