title: beta-Endorphin- (1-27): acetylation of alpha-amino groups enhances immunoreactivity but diminishes analgesic and receptor-binding activities with no changes in circular dichroism spectra.
mesh_terms: D000107:Acetylation; D000595:Amino Acid Sequence; D002942:Circular Dichroism; D004723:Endorphins / Q000276:immunology / Q000378:metabolism*; D010146:Pain / Q000503:physiopathology; D010446:Peptide Fragments; D011487:Protein Conformation; D011863:Radioimmunoassay; D011957:Receptors, Opioid / Q000378:metabolism*; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D010446:Peptide Fragments; D011957:Receptors, Opioid