title: Isoelectrofocusing on flat bed for determining and separating beta-endorphin.
abstract: Camel synthetic beta-endorphin focused in three bands by isoelectrofocusing on 1 mm polyacrylamide thin gel. All the bands have opioid activity, measured on guinea pig ileum, and radioimmunologically react with beta-endorphin antiserum. Since beta-endorphin from rat pituitary gland, particularly from the neurointermediate lobe, also focused in several bands, we hypothesized that the camel peptide occurs in different conformations. A quick, simple technique based on histoelectrofocusing is proposed as a good approach to separating and measuring beta-endorphin from rat pituitary lobes. The method gives very high recovery.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002162:Camelus; D004723:Endorphins / Q000032:analysis*; D005260:Female; D007525:Isoelectric Focusing / Q000379:methods; D010902:Pituitary Gland / Q000032:analysis*; D010903:Pituitary Gland, Anterior / Q000032:analysis; D051381:Rats; D011919:Rats, Inbred Strains; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin