Thyroxine-binding globulin (TBG) is a globulin protein that in humans is encoded by the SERPINA7 gene. TBG binds thyroid hormones in circulation.

What type of protein is thyroxine?

Thyroxine-binding globulin (TBG) is one of three major transport proteins, which are primarily responsible for binding to and transporting thyroid hormones to the necessary tissues. The other two serum transport proteins include transthyretin and human serum albumin.

Is thyroid a protein hormone?

Thyroglobulin (Tg) is a 660 kDa, dimeric protein produced by the follicular cells of the thyroid and used entirely within the thyroid gland.