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Comparative Study
. 1998 Nov 1;53(3):315-24.
doi: 10.1006/geno.1998.5433.

Molecular cloning and chromosomal localization of the mouse Gpr37 gene encoding an orphan G-protein-coupled peptide receptor expressed in brain and testis

D Marazziti  1 , A Gallo, E Golini, R Matteoni, G P Tocchini-Valentini
Affiliations
Comparative Study

Molecular cloning and chromosomal localization of the mouse Gpr37 gene encoding an orphan G-protein-coupled peptide receptor expressed in brain and testis

D Marazziti et al. Genomics. .

Abstract

We report the cloning of the mouse ortholog of the human GPR37 gene, which encodes an orphan G-protein-coupled receptor highly expressed in brain tissues and homologous to neuropeptide-specific receptors (D. Marazziti et al., 1997, Genomics 45: 68-77; Z. Zeng et al., 1997, Biochem. Biophys. Res. Commun. 233: 559-567). The genomic organization of the GPR37 gene is conserved in both mouse and human species with a single intron interrupting the receptor-coding sequence within the presumed third transmembrane domain. Comparative genetic mapping of the GPR37 gene showed that it maps to a conserved chromosomal segment on proximal mouse chromosome 6 and human chromosome 7q31. The mouse Gpr37 gene contains an open reading frame coding for a 600-amino-acid protein 83% identical to the human GPR37 gene product. The predicted mouse GPR37 protein contains seven putative hydrophobic transmembrane domains, as well as a long (249 amino acid residues), arginine- and proline-rich amino-terminal extracellular domain, which is also a distinctive feature of the human GPR37 receptor. Northern blot analysis of mouse tissues with Gpr37-specific probes revealed a main 3.8-kb mRNA and a much less abundant 8-kb mRNA, both expressed in the brain. A 3-kb mRNA is also expressed in the testis. Both the mouse and the human GPR37 genes may belong to a class of highly conserved mammalian genes encoding a novel type of G-protein-coupled receptor predominantly expressed in the brain.

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