title: Orientation restrictions of the peptide hormone, thyrotropin-releasing factor, due to intramolecular hydrogen bonding.
mesh_terms: D000478:Alkylation; D005971:Glutamates; D006639:Histidine; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles; D008745:Methylation; D008956:Models, Chemical; D010880:Piperidines; D011199:Potentiometry; D011392:Proline; D011759:Pyrrolidines; D013329:Structure-Activity Relationship; D013973:Thyrotropin-Releasing Hormone
chemical_list: D005971:Glutamates; D007093:Imidazoles; D010880:Piperidines; D011759:Pyrrolidines; D006639:Histidine; D013973:Thyrotropin-Releasing Hormone; D011392:Proline