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Separation of Membrane Bound G-Protein from Porcine Brain Using CIM® Supports

Membrane bound heterotrimeric guanine-nucleotide proteins (G-proteins) are the important components of the cellular signal transduction cascade. They are GTPases which cycle between an inactive and an active configuration by catalysing the exchange of GTP for GDP bound to G subunit. In our study we investigated separation of high affinity GTP'S binding proteins (G-proteins) from plasma membrane of porcine brain by HPLC using CIM® (Convective Interaction Media) supports. CIM® supports proved to be an efficient tool for cytosolic protein separation on second or minute time scale. No study of separation of membrane bound proteins by CIM® supports have been done so far.


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