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  • Title: Purification of thyroid peroxidase by monoclonal antibody-assisted immunoaffinity chromatography.
    Author: Nakagawa H, Kotani T, Ohtaki S, Nakamura M, Yamazaki I.
    Journal: Biochem Biophys Res Commun; 1985 Feb 28; 127(1):8-14. PubMed ID: 3977928.
    Abstract:
    A rapid method was developed for purification of hog thyroid peroxidase by immunoaffinity chromatography on a column of Sepharose 4B coupled to a monoclonal antibody to the peroxidase. The purified enzyme had a specific activity of 194 units/mg and showed the same absorption spectrum in the Soret and visible regions as that of the enzyme purified after trypsin treatment. The ratio of A413 nm to A280 nm was 0.24, being much less than that for the trypsinized enzymes. Upon sodium dodecyl sulfate-polyacrylamide gel electrophoresis, it gave a broad protein band in the 100,000-dalton region. It is concluded that the preparation purified in this study represents a native form of thyroid peroxidase.
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