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FEBS Lett. 1985 Oct 7;190(1):147-52.

Purification of the human thyroid peroxidase and its identification as the microsomal antigen involved in autoimmune thyroid diseases.

Abstract

Human thyroid peroxidase (TPO) has been purified from thyroid microsomes by immunoaffinity chromatography using a monoclonal antibody (mAb) to TPO. The eluted material had a specific activity of 381 U/mg and exhibited a peak in the Soret region. The ratio of A411 to A280 ranged from 0.20 to 0.25. Upon SDS-polyacrylamide gel electrophoresis, the purified enzyme gave two contiguous bands in the 100 kDa region. Further, it has been demonstrated that sera with anti-microsomal autoantibodies from patients presenting Graves' or Hashimoto's thyroiditis diseases were able to bind to purified TPO and to inhibit in a dose-dependent manner the mAb binding to purified TPO. This suggests that TPO is the thyroid antigen termed to date the microsomal antigen.

PMID:
2995127
[Indexed for MEDLINE]
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