Two isoforms of prophenoloxidase were isolated from pupae of Oregon-R strain of Drosophila melanogaster. The purification procedure included ammonium sulfate fractionation, Sephacryl S-200 gel chromatography, DEAE-cellulose, and hydroxylapatite column chromatography. The two isoforms, A1 and A3, could be separated by ammonium sulfate fractionation. The… (More)
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