the synthesis , interconversion , and catabolism of purine bases , ribonucleosides , and ribonucleotides in wild-type saccharomyces cerevisiae were studied by measuring the conversion of radioactive adenine , hypoxanthine , guanine , and glycine into acid-soluble purine bases , ribonucleosides , and ribonucleotides , and into nucleic acid adenine and guanine .
C0034140
purine
C0001407
adenine