Thyroid peroxidase (TPO) is a membrane-bound, glycosylated, heme-containing peroxidase. It is encoded by the gene mapped to human chromosome 2p25.3. The encoded protein is a member of the human peroxidases family. TPO is a ~100 kDa protein with 933-amino acids. Mature TPO is characterized with a short transmembrane and cytoplasmic regions, as well as a dominant ectodomain, containing MPO-like, complement control protein (CCP)-like and epidermal growth factor (EGF)-like domains.
免疫原
Peptide with sequence C-TRHVIQVSNEVVTDD, from the internal region of the protein sequence according toNP_000538.3; NP_783650.1; NP_783652.1; NP_783653.1
生物化学的/生理学的作用
Thyroid peroxidase (TPO) is involved in the biosynthesis of thyroid hormones T3 and T4. It catalyzes the oxidation of the inorganic iodide and coupling of iodinated tyrosine to produce thyroxine and triiodothyronine. Mutation in the gene increases the risk of susceptibility to autoimmune thyroiditis in patients with allergic rhinitis and asthma. Genetic deficiency of TPO is associated with the development of congenital hypothyroidism.
特徴および利点
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Serum Anti-TPO and TPO Gene Polymorphism as a Predictive Factor for Hidden Autoimmune Thyroiditis in Patient with Bronchial Asthma and Allergic Rhinitis.
El RS, et al.
The Egyptian Journal of Immunology / Egyptian Association of Immunologists, 23(1), 77-86 (2016)
Thyroid peroxidase (TPO) expressed in thyroid and breast tissues shows similar antigenic properties.
Godlewska M, et al.
PLoS ONE, 12(6) (2017)
Identification and characterization of VPO1, a new animal heme-containing Peroxidase