Proteome map of the human hippocampus

✍ Scribed by Paul F. Edgar; Judith E. Douglas; Catriona Knight; Garth J.S. Cooper; Richard L.M. Faull; Robb Kydd

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 345 KB
• Volume: 9
• Category: Article
• ISSN: 1050-9631
• DOI: 10.1002/(sici)1098-1063(1999)9:6<644::aid-hipo5>3.0.co;2-s

✦ Synopsis

The proteins expressed by a genome have been termed the proteome. By comparing the proteome of a disease-affected tissue with the proteome of an unaffected tissue it is possible to identify proteins that play a role in a disease process. The hippocampus is involved in the processing of short-term memory and is affected in Alzheimer's disease. Any comparative proteome analysis that can identify proteins important in a disease affecting the hippocampus requires the characterization of the normal hippocampal proteome. Therefore, we homogenised normal hippocampal tissue and separated the proteins by two-dimensional polyacrylamide gel electrophoresis (2DE). Seventy-two unique protein spots were collected from Coomassie blue-stained 2DE gels and subjected to in-gel digestion with trypsin, reversed-phase high-pressure liquid chromatography peptide separation, and N-terminal protein sequencing. Sufficient protein sequence was obtained to successfully characterize 66 of the 72 protein spots chosen (92%). Three of the 66 proteins were not present in any database (4.5%). The characterized proteins comprised two dominant functional groups, i.e., enzymes involved in intermediary cellular metabolism (40%), and proteins associated with the cytoskeleton (15%). The identity, molecular mass, isoelectric point, and relative concentration of the characterized proteins are described and constitute a partial proteome map of the normal human hippocampus.