title: [Purification and immunochemical characteristics of a specific membrane protein from human brain].
abstract: Three specific antigens, PS-1, PS-2 and PS-3 were identified by crossed immunoelectrophoresis. The proteins were solubilized from adult human brain crude membrane fraction with Triton X-100 and purified by column chromatography on phenyl-Sepharose CL 4B. The PS-3 antigen was shown to be identical to protein D2. Antigen PS-2 was purified by affinity column chromatography consecutively with phenyl-Sepharose CL 4B, concanavalin Sepharose 4B, lysin-Sepharose and phytohemagglutinin-Sepharose. The tissue specificity of the protein was characterized by rocket-line immunoelectrophoresis of the extracts from various human tissues in interpose gel. Protein PS-2 was detected in fetal human brain tissue in large amounts. The fetal protein form did not absorb on phenyl-Sepharose. PS-2 is an interspecies brain protein which gives a criss-cross immunochemical reaction with ox and rat brain extracts. Protein PS-2 content is 30% of the total protein content of adult human brain crude membrane fraction.
mesh_terms: D000328:Adult; D000954:Antigens, Surface / Q000302:isolation & purification*; D001921:Brain / Q000254:growth & development; D001923:Brain Chemistry; D002846:Chromatography, Affinity; D005260:Female; D005333:Fetus; D006801:Humans; D007122:Immunoelectrophoresis; D008565:Membrane Proteins / Q000302:isolation & purification*; D009419:Nerve Tissue Proteins / Q000302:isolation & purification*; D011247:Pregnancy; D013329:Structure-Activity Relationship
chemical_list: D000954:Antigens, Surface; D008565:Membrane Proteins; D009419:Nerve Tissue Proteins
vernacular_title: Ochistka i immunokhimicheskaia kharakteristika spetsificheskogo membrannogo belka mozga cheloveka.