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Clinical Chemistry 28: 782-789, 1982;
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Clinical Chemistry, Vol 28, 782-789, Copyright © 1982 by American Association for Clinical Chemistry

Two-dimensional gel electrophoresis of human brain proteins. I. Technique and nomenclature of proteins

DE Comings

To understand at a molecular level the basis of the normal and pathological genetic differences between individuals it is necessary to begin a detailed two-dimensional gel electrophoretic mapping of the proteins of the human brain in normal individuals and those with various genetic neurological disorders. The present study is an examination of the polypeptide patterns of extracts of the human brain made with 9 mol/L urea solution. Details of the technique and the nomenclature of the patterns obtained are presented. the gels are separated into 20 sub-sections, based on standards with known molecular masses and isoelectric points. Groups of polypeptides within these sub- sections are identified by a number and a letter; the individual proteins are identified by a number. Thus, protein 1 in subsection 8, group b, would be designated 8b: 1. Subsequent papers in this series identify many of these proteins; show which proteins belong to the cytosol, synaptosome, myelin, and other brain fractions; show how these patterns vary between normal individuals and those with different neurological and psychiatric conditions; examine the effect of severe gliosis; and present the results of non-equilibrium gel electrophoresis for the more basic proteins.




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Copyright © 1982 by the American Association for Clinical Chemistry.