PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11788584-3 2002 Small ( approximately 48%) but physiologically relevant increases in intracellular but not extracellular total amino acid concentration (or Leu or Trp but not Ala, Glu, or Gln alone) resulted in increased phosphorylation of p70(S6K) and its substrate ribosomal protein S6. Leucine 140-143 ribosomal protein S6 kinase B1 L homeolog Xenopus laevis 224-227