title: Structure, mapping and expression of a human NOR-1 gene, the third member of the Nur77/NGFI-B family.
abstract: We identified a human homologue of NOR-1 (neuron-derived orphan receptor) from the fetal brain. There are two transcripts for human NOR-1, encoding 626 amino acid residues with a calculated molecular mass of 68 kDa. The high homology between hNOR-1, mNur77/rNGFI-B/hTR3, and mNurr1/rRNR-1/hNOT indicated that these three orphan receptors form a distinct subfamily within the steroid/thyroid receptor superfamily. Human NOR-1 mRNA was detected in the adult heart and skeletal muscle as well as in the fetal brain, indicating that its expression is not restricted to events that occur during neural development. The hNOR-1 gene is more than 35 kilobases long and interrupted by seven introns. The exon-intron structure of the gene is generally conserved when compared with the steroid/thyroid receptor superfamily and is remarkably similar to that of the Nur77/NGFI-B genes. This suggests that the Nur77/NGFI-B family has evolved from a common ancestral gene. Fluorescence in situ hybridization (FISH) revealed that the gene is located on chromosome 9q.
authors.affiliation: Institute of Biomedical Science, TERUMO R&D Center, Kanagawa, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ohkura
authors.forename: M
authors.initials: M
authors.lastname: Ito
authors.forename: T
authors.initials: T
authors.lastname: Tsukada
authors.forename: K
authors.initials: K
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: K
authors.initials: K
authors.lastname: Miki
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D015152:Blotting, Northern; D015139:Blotting, Southern; D002874:Chromosome Mapping; D002899:Chromosomes, Human, Pair 9 / Q000235:genetics; D003001:Cloning, Molecular; D017931:DNA Primers; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics*; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008969:Molecular Sequence Data; D009419:Nerve Tissue Proteins / Q000737:chemistry / Q000235:genetics*; D009447:Neuroblastoma / Q000737:chemistry; D057105:Nuclear Receptor Subfamily 4, Group A, Member 1; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics; D018160:Receptors, Cytoplasmic and Nuclear; D011987:Receptors, Steroid / Q000737:chemistry / Q000235:genetics*; D011988:Receptors, Thyroid Hormone / Q000737:chemistry / Q000235:genetics*; D017386:Sequence Homology, Amino Acid; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics*; D014158:Transcription, Genetic; D014407:Tumor Cells, Cultured
chemical_list: D017931:DNA Primers; D004268:DNA-Binding Proteins; C539821:NR4A1 protein, human; C490412:NR4A3 protein, human; D009419:Nerve Tissue Proteins; D057105:Nuclear Receptor Subfamily 4, Group A, Member 1; D012333:RNA, Messenger; D018160:Receptors, Cytoplasmic and Nuclear; D011987:Receptors, Steroid; D011988:Receptors, Thyroid Hormone; D014157:Transcription Factors