PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3121434-2 1987 In the put3-75 mutant, the basal level of expression (ammonia as nitrogen source) of PUT1-lacZ and PUT2-lacZ gene fusions as measured by beta-galactosidase activity is reduced 4- and 7-fold, respectively, compared with the wild-type strain. Ammonia 54-61 proline dehydrogenase Saccharomyces cerevisiae S288C 85-89 3537723-8 1986 Approximately 50-fold more PUT1-specific mRNA was detected in induced (proline-grown) cells than in uninduced (ammonia-grown) cells. Ammonia 111-118 proline dehydrogenase Saccharomyces cerevisiae S288C 27-31