Isoforms of selenoprotein P in rat plasma. Evidence for a full-length form and another form that terminates at the second UGA in the open reading frame.

Abstract

Several forms of selenoprotein P that share the same N-terminal sequence have been identified in rat plasma, but only one selenoprotein P mRNA has been characterized. The open reading frame of the mRNA contains 10 UGAs that presumably code for selenocysteine residues. Using heparin-Sepharose, we isolated two of the protein forms from immunoaffinity-purified… (More)

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