title: Isolation of transforming DNA: cloning the hamster aprt gene.
abstract: We have isolated the hamster gene coding for the enzyme adenine phosphoribosyl transferase (aprt) using gene transfer and molecular cloning of transforming DNA. Mouse aprt- cells were transformed to the aprt+ phenotype with the product of ligation of Hind III-cleaved hamster genomic DNA and pBR322 DNA. In this manner, the aprt gene was linked to a marked plasmid sequence and segregated from other hamster sequences. A lambda-recombinant phage containing pBR322 DNA sequences was isolated from a library of aprt+ transformed cell DNA. The phage DNA transfers hamster aprt+ activity at a frequency expected of a pure gene. Furthermore, sequences homologous to this clone are present in all hamster aprt+ transformants examined. This experimental design should in theory permit the isolation of any gene coding for selectable or identifiable functions for which DNA-mediated gene transfer can be effected.
mesh_terms: D000228:Adenine Phosphoribosyltransferase / Q000235:genetics*; D000818:Animals; D006224:Cricetinae / Q000235:genetics*; D003412:Cricetulus / Q000235:genetics*; D004274:DNA, Recombinant; D005796:Genes; D010430:Pentosyltransferases / Q000235:genetics*; D010957:Plasmids; D012107:Research Design; D014170:Transformation, Genetic
chemical_list: D004274:DNA, Recombinant; D010430:Pentosyltransferases; D000228:Adenine Phosphoribosyltransferase