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Functional Divergence Of Glycoprotein Hormone Receptors, Mihael Freamat, Stacia A. Sower
Functional Divergence Of Glycoprotein Hormone Receptors, Mihael Freamat, Stacia A. Sower
New Hampshire Agricultural Experiment Station Publications
Two lamprey glycroprotein hormone receptors (lGpH-R I and II) highly similar with gnathostome GpH-Rs were cloned from sea lamprey testes and thyroid, respectively. Vertebrate glycoprotein protein receptors have a large extracellular domain (ED) containing a leu rich domain (LRD) linked to a rhodopsin-like transmembrane domain (TMD) through a highly divergent linker region (signal specificity domain, SSD or 'hinge' region) and a third major segment, the intracellular domain. To determine the potential roles of the different domains in the activation of the receptor following ligand-receptor binding, functional assays were performed on lGpH-R I/rat luteinizing hormone (LH)-R domain swapped chimeric receptors. These …