PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33653947-7 2021 They also display enhanced mTORC1 activity that prevents the proteasomal degradation of glutamine synthetase (GS), the rate-limiting enzyme for glutamine synthesis. Glutamine 88-97 CREB regulated transcription coactivator 1 Mus musculus 27-33