title: Synthesis of new head-activator analogues and their application for improved radioimmunoassays.
abstract: New analogues of head activator were produced for receptor and radioimmunoassay studies. The precursor molecules [(4'-I)Phe11] head activator and [Tyr11] head activator were synthesised for catalytic tritiation and iodination, respectively. With the tracer [(3,5-125 I2)Tyr11] head activator the sensitivity range of the radioimmunoassay was 5-100 fmol.
mesh_terms: D009479:Neuropeptides / Q000032:analysis* / Q000138:chemical synthesis*; D011761:Pyrrolidonecarboxylic Acid / Q000031:analogs & derivatives; D011863:Radioimmunoassay / Q000379:methods*; D013329:Structure-Activity Relationship
chemical_list: D009479:Neuropeptides; C032522:head activator peptide; D011761:Pyrrolidonecarboxylic Acid