Recombinant Human Thyroglobulin protein (GST tag N-Terminus)
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Recombinant Human Thyroglobulin protein (GST tag N-Terminus) is a Human Fragment protein, in the 2659 to 2768 aa range, expressed in Wheat germ, suitable for SDS-PAGE, ELISA, WB.
View Alternative Names
Thyroglobulin, Tg, TG
- SDS-PAGE
Unknown
SDS-PAGE - Recombinant Human Thyroglobulin protein (GST tag N-Terminus) (AB152743)
12.5% SDS-PAGE analysis of ab152743 stained with Coomassie Blue.
Reactivity data
Sequence info
Properties and storage information
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Aliquoting information
Storage information
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
Thyroglobulin plays a critical role in the synthesis and storage of thyroid hormones. It acts as a scaffold for iodination and hormone synthesis within the colloid of thyroid follicles. Thyroglobulin is not part of a protein complex; rather it undergoes iodination to form hormone precursors that later convert into active hormones. Anti-thyroglobulin antibodies can be used in research or diagnostic labs to detect the presence or concentration of thyroglobulin in serum samples. These antibodies help in understanding the nuances of thyroid hormone biosynthesis and in monitoring thyroid activity.
Pathways
Thyroglobulin is deeply involved in the thyroid hormone synthesis pathway a fundamental part of the endocrine system's operations. This process connects closely with the iodine metabolism pathway as iodine plays an essential role in hormone production. Thyroglobulin interacts indirectly with proteins like thyroid peroxidase which catalyzes iodination of thyroglobulin. The synthesis and release of thyroid hormones proceed through a carefully orchestrated sequence affecting many physiological processes including metabolism growth and development.
Specifications
Form
Liquid
General info
Function
Acts as a substrate for the production of iodinated thyroid hormones thyroxine (T4) and triiodothyronine (T3) (PubMed : 17532758, PubMed : 32025030). The synthesis of T3 and T4 involves iodination of selected tyrosine residues of TG/thyroglobulin followed by their oxidative coupling in the thyroid follicle lumen (PubMed : 32025030). Following TG re-internalization and lysosomal-mediated proteolysis, T3 and T4 are released from the polypeptide backbone leading to their secretion into the bloodstream (PubMed : 32025030). One dimer produces 7 thyroid hormone molecules (PubMed : 32025030).
Sequence similarities
Belongs to the type-B carboxylesterase/lipase family.
Post-translational modifications
Iodinated on tyrosine residues by TPO (PubMed:2760035, PubMed:32025030). There are 4 pairs of iodinated tyrosines used for coupling: acceptor Tyr-24 is coupled to donor Tyr-149 or Tyr-234, acceptor Tyr-2573 is coupled to donor Tyr-2540, acceptor Tyr-2766 in monomer 1 is coupled to donor Tyr-2766 in monomer 2 and acceptor Tyr-1310 in monomer 1 is coupled to donor Tyr-108 in monomer 2 (PubMed:32025030).. Sulfated tyrosines are desulfated during iodination.. Undergoes sequential proteolysis by cathepsins to release thyroxine (T4) and triiodothyronine (T3) hormones. In the thyroid follicle lumen, cross-linked TG (storage form) is solubilized by limited proteolysis mediated by cathepsins CTSB and/or CTSL. Partially cleaved TG is further processed by CTSK/cathepsin K and/or CTSL resulting in the release of T4. Following endocytosis, further processing occurs leading to the release of T3 and more T4 hormones.
Target data
Product promise
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