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Biochem Biophys Res Commun. 1998 Jun 18;247(2):266-70.

Identification and cloning of an orphan G protein-coupled receptor of the glycoprotein hormone receptor subfamily.

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Department of Human Genetics, Merck Research Laboratories, WP26A-3000, West Point, Pennsylvania 19486, USA.


Mining of the EST database identified a human EST that was predicted to encode a novel member of the glycoprotein hormone receptor subfamily. Based on the sequence information, the full-length coding region of this gene was isolated and sequenced. This gene, designated HG38, is predicted to encode a polypeptide of 907 amino acid residues with a putative signal peptide sequence at its very N-terminus. HG38 is most closely related to members of the glycoprotein hormone receptor subfamily with approximately 35% overall identity at the protein sequence level. As with the glycoprotein hormone receptors, HG38 contains a long extracellular domain with a total of 16 leucine-rich repeats. Northern blot analysis showed that HG38 was expressed in skeletal muscle, placenta, spinal cord, and various regions of the brain. Radiation hybrid mapping placed HG38 into human chromosome 12q22-23. HG38 is most likely to be a receptor for a novel class of glycoprotein ligands.

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