title: Mass spectrometrical analysis of phosphoprotein enriched in astrocytes of 15 kDa in mouse hippocampi.
abstract: Phosphoprotein enriched in astrocytes of 15 kDa (PEA-15) is a small protein that was first identified as an abundant phosphoprotein in brain. PEA-15 was characterised so far at the immunochemical level and by a microsequencing attempt. In order to update characterisation of this important structure by advanced methodology unambiguously identifying proteins independent of antibody availability and specificity, we used a proteomic method for this purpose: Performing protein profiling in mouse hippocampi using two dimensional gel electrophoresis with subsequent mass spectrometrical (MS/MS) identification we detected this protein and demonstrate proteomic characterisation of PEA-15 (Q62048). This study enables further specific and unambiguous determination serving as an analytical tool.
authors.affiliation: Department of Pediatrics, Medical University of Vienna, Vienna, Austria.
authors.forename: J-H
authors.initials: JH
authors.lastname: Shin
authors.forename: J-M
authors.initials: JM
authors.lastname: Delabar
authors.forename: G
authors.initials: G
authors.lastname: Lubec
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D051017:Apoptosis Regulatory Proteins; D015180:Electrophoresis, Gel, Two-Dimensional; D006624:Hippocampus / Q000737:chemistry*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008969:Molecular Sequence Data; D010750:Phosphoproteins / Q000032:analysis*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*
chemical_list: D051017:Apoptosis Regulatory Proteins; C490444:Pea15 protein, mouse; D010750:Phosphoproteins