PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12006583-6 2002 These findings were independently confirmed by hypoxanthine transport experiments with recombinant hENT2 produced in purine-cytosine permease (FCY2)-deficient Saccharomyces cerevisiae and provide the first direct demonstration that the ENT2 isoform is a dual mechanism for the cellular uptake of nucleosides and nucleobases, both of which are physiologically important salvage metabolites. nucleobases 312-323 epsin Saccharomyces cerevisiae S288C 100-104