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  • Title: Cloning the complete human adenine phosphoribosyl transferase gene.
    Author: Murray AM, Drobetsky E, Arrand JE.
    Journal: Gene; 1984 Nov; 31(1-3):233-40. PubMed ID: 6241170.
    Abstract:
    We have isolated a clone from a human genomic lambda library which cross-hybridises with the cloned hamster adenine phosphoribosyl transferase gene (aprt). After restriction mapping and further hybridisation to the hamster gene, a series of putative human aprt-containing fragments has been isolated and tested for ability to transform adenine phosphoribosyl transferase-deficient (aprt-) strains of Chinese hamster ovary (CHO) cells to APRT proficiency. Transforming activity was detected in a 48-kb lambda clone, the 17.4-kb EcoRI insert, and an 8.6-kb HincII fragment. Smaller fragments have thus far shown no transforming activity. Transformants appear to be stable for the APRT+ phenotype, and human aprt DNA sequences are present in the hamster transformants. The 8.6-kb HincII fragment has been subcloned and the insert mapped. Nonrepetitive regions of this subclone have been identified, and should prove valuable for chromosome walking studies on human chromosome 16, familial studies of a human aprt- trait, the analysis of restriction fragment length polymorphisms (RFLPs) in the area surrounding the aprt gene, and the fine structure mapping of the mutations induced by chemical carcinogens and alkylating agents.
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