Na+ Negatively charged groups (red) Na+ Positively charged counterions Rinse in buffer, add ionic compounds. Positive charges (triangles) stick.

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Presentation transcript:

Na+ Negatively charged groups (red) Na+ Positively charged counterions Rinse in buffer, add ionic compounds. Positive charges (triangles) stick. Negatives (squares) and neutrals (pentagons) do not stick Na+ Sodium ions replaced by positively charged ions Rinse Cation Exchange Chromatography

From Wikipedia Commons, Author=Jeffrey M. Vinocur File:Gel_electrophoresis_app aratus.JPG

From Wikipedia Commons. Author = Dr d12Dr d12 NAgel4wiki.png