PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11967149-4 2002 RESULTS: We have identified a conserved TOR signaling (TOS) motif in the N terminus of all known S6 kinases and in the C terminus of the 4E-BPs that is crucial for phosphorylation and regulation S6K1 and 4E-BP1 activities. tos 55-58 ribosomal protein S6 kinase B1 Homo sapiens 195-210 11967149-5 2002 Deletion or mutations within the TOS motif significantly inhibit S6K1 activation and the phosphorylation of its hydrophobic motif, Thr389. tos 33-36 ribosomal protein S6 kinase B1 Homo sapiens 65-69 11967149-8 2002 Furthermore, only overexpression of S6K1 with an intact TOS motif prevents 4E-BP1 phosphorylation by a common mTOR-regulated modulator of S6K1 and 4E-BP1. tos 56-59 ribosomal protein S6 kinase B1 Homo sapiens 36-40 11967149-9 2002 CONCLUSIONS: S6K1 and 4E-BP1 contain a conserved five amino acid sequence (TOS motif) that is crucial for their regulation by the mTOR pathway. tos 75-78 ribosomal protein S6 kinase B1 Homo sapiens 13-28