Endocrine Abstracts

The hinge region of the hTSHR links the extracellular LRR-domain with the transmembrane domain. Recently, we identified mutations E297A, E303A, and D382A in the hinge region with a cell surface expression comparable to the wt but with a strongly reduced bovine TSH (bTSH) binding. The combined triple mutation E297A/E303A/D382A revealed a cell surface expression comparable to the wt but in comparison to the single mutants a more pronounced reduction of bTSH binding (9% of the wt...