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Abstract
To purify the mammalian cell membrane porphyrin binding proteins (PBP), an original affinity chromatographic technique is proposed. The method is based on the application of an agarose attached fullerene-porphyrin ligand connected to a polysaccharide gel matrix through the epoxy-cyclohexyl residue interface. A selective PBP-stationary phase coupling has been managed in a single column chromatographic run leading to a complete purification of the 17.6 kDa monomer protein from the rat myocardium mitochondria membranes. A synchronous pH and ionic strength linear gradients were used to separate this protein with a high specific affinity to the porphyrin K related structures from all non-specific sorption retained membrane proteins.
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