title: Characterization of the mouse alpha1D-adrenergic receptor gene.
abstract: Alpha1-adrenergic receptors (alpha1-ARs) play critical roles in the regulation of a variety of physiological processes. Increasing evidence suggests that multiple receptor subtypes of alpha1-ARs regulate these physiological processes. Molecular cloning has identified three distinct cDNAs encoding alpha1-AR subtypes (alpha1A, alpha1B and alpha1D) that are structurally homologous. Among the alpha1-AR subtypes, the function of the alpha1D-AR remains unclear. In order to examine the physiological role of alpha1D-AR, we cloned and characterized a gene for the mouse alpha1D-AR. Using a mouse alpha1D-AR cDNA as a probe, we isolated the gene for the mouse alpha1D-AR from a mouse genomic library. The alpha1D-AR consists of two exons and an intron that interrupts the coding region of the putative sixth transmembrane domain. The 5'-flanking region of exon 1 contains neither a TATA box nor a CAAT box but is high in GC content and contains several Sp1 binding sites (GC boxes). This pattern is similar to promoters described for other members of alpha1-ARs. The untranslated region also contains putative cyclic AMP response elements. Isolation of this gene will allow further investigation, via gene knock-outs and deletion mutants, of the mechanisms of transcriptional regulation and a greater understanding of the physiological role of alpha1D-AR.
authors.affiliation: Department of Urology, Faculty of Medicine, Niigata University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Arai
authors.forename: A
authors.initials: A
authors.lastname: Tanoue
authors.forename: N
authors.initials: N
authors.lastname: Goda
authors.forename: M
authors.initials: M
authors.lastname: Takeda
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.forename: G
authors.initials: G
authors.lastname: Tsujimoto
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D003001:Cloning, Molecular; D004247:DNA; D051379:Mice; D008969:Molecular Sequence Data; D018340:Receptors, Adrenergic, alpha-1 / Q000235:genetics*
chemical_list: C547720:Adra1d protein, mouse; D018340:Receptors, Adrenergic, alpha-1; D004247:DNA