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Horm Metab Res 2018; 50(12): 908-921
DOI: 10.1055/a-0717-5514
Review
© Georg Thieme Verlag KG Stuttgart · New York

Thyroid Peroxidase as an Autoantigen in Hashimoto’s Disease: Structure, Function, and Antigenicity

Daniel E. Williams  
1   Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
,
Sarah N. Le  
1   Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
,
Marlena Godlewska
2   Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
,
David E. Hoke
1   Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
,
Ashley M. Buckle
1   Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
› Author Affiliations
Further Information

Publication History

received 02 May 2018

accepted 20 August 2018

Publication Date:
25 October 2018 (online)

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Abstract

Human thyroid peroxidase (TPO), is an important enzyme responsible for the biosynthesis of thyroid hormones and is a major autoantigen in autoimmune thyroid diseases (AITDs) such as the destructive Hashimoto’s thyroiditis. Although the structure of TPO has yet to be determined, its extracellular domain consists of three regions that exhibit a high degree of sequence similarity to domains of known three-dimensional structure: the myeloperoxidase (MPO)-like domain, complement control protein (CCP)-like domain, and epidermal growth factor (EGF)-like domain. Homology models of TPO can therefore be constructed, providing some structural context to its known function, as well as facilitating the mapping of regions that are responsible for its autoantigenicity. In this review, we highlight recent progress in this area, in particular how a molecular modelling approach has advanced the visualisation and interpretation of epitope mapping studies for TPO, facilitating the dissection of the interplay between TPO protein structure, function, and autoantigenticity.

Key words

thyroid peroxidise - TPO - autoantibodies - thyroid - Hashimoto’s thyroiditis

* These authors contributed equally to this manuscript.


 

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