PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10827169-7 2000 These results indicated that FUI1 has high selectivity for uracil-containing ribonucleosides and imports uridine across cell-surface membranes, whereas FUN26 has broad nucleoside selectivity and most likely functions to transport nucleosides across intracellular membranes. Ribonucleosides 77-92 uridine permease Saccharomyces cerevisiae S288C 29-33