title: A novel soluble brain-specific protein (Sy-1). Identification and partial characterization.
abstract: A novel brain-specific antigen, called Sy-1, has been identified in whole rat brain hypotonic extracts by means of an antiserum produced in rabbits against the synaptosomal cytosol. Sy-1 is an acidic protein (pI 4.7) present exclusively in a soluble form and it does not carry any sugar moiety. Sy-1 is found only in rat brain and, in a partially identical form, in mouse brain. In rat brain the antigen is more concentrated in the brainstem than in the forebrain and cerebellum. On the basis of immunological, physico-chemical and biological criteria Sy-1 differs from other, already described, brain-specific proteins.
mesh_terms: D000818:Animals; D000941:Antigens / Q000302:isolation & purification; D001923:Brain Chemistry; D009419:Nerve Tissue Proteins / Q000302:isolation & purification*; D011817:Rabbits; D012995:Solubility
chemical_list: D000941:Antigens; D009419:Nerve Tissue Proteins