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Reverse-phase HPLC (Left) and SDS/PAGE (Right) of purified bovine kidney QR2. The single band observed on the SDS/PAGE migrates at 22.0 kDa. The molecular weight standards are β-galactosidase (11.6 kDa), RNase (13.7 kDa), trypsinogen (24 kDa), ovalbumin (44 kDa), and BSA (66 kDa). The HPLC of purified bQR2 shows a single absorption peak at 215 nm.
