PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 169122-5 1975 In cultures treated with cycloheximide (10 mug/ml) or proline (6.3 mM) the initial binding of [2,3-3H-Pro]TRH to receptors, measured after 1 h, was 97% or 102% of control. Proline 54-61 thyrotropin releasing hormone Rattus norvegicus 106-109 169122-6 1975 However, the incorporation of label from [2,3-3H-Pro]TRH into an acid-precipitable product after 22 h was inhibited by 81 and 74% by cycloheximide (1 mug/ml) and proline (2.5 mM). Proline 162-169 thyrotropin releasing hormone Rattus norvegicus 53-56 169122-7 1975 Formation of [2,3-3H] proline from [2,3-?3H-Pro] TRH was demonstrated by thin layer chromatography; the percentage of non-protein radioactivity with an Rf of proline increased from 20 to 80% in GH3 cells incubated 1 or 24 h with [2,3-3H-Pro]TRH. Proline 22-29 thyrotropin releasing hormone Rattus norvegicus 49-52 169122-7 1975 Formation of [2,3-3H] proline from [2,3-?3H-Pro] TRH was demonstrated by thin layer chromatography; the percentage of non-protein radioactivity with an Rf of proline increased from 20 to 80% in GH3 cells incubated 1 or 24 h with [2,3-3H-Pro]TRH. Proline 22-29 thyrotropin releasing hormone Rattus norvegicus 241-244 169122-8 1975 We conclude that after binding to receptors on GH3 cells, TRH is slowly metabolized to its constituent amino acids, and the products [2,3-3H]proline or [14C]histidine are incorporated into newly synthesized proteins. Proline 141-148 thyrotropin releasing hormone Rattus norvegicus 58-61