Abstract
Members of the T-box family are known to play critical roles in the embryonic development of most animal species. Recently, we have isolated its new mammalian member, Tbr2, from mouse embryonic brain. We have also shown that the expression patterns of Tbr2 and the closely related Tbr1 appear to be reciprocal in the developing brain; Tbr2 is expressed in mesencephalon and rhombencephalon, but expression of Tbr1 is restricted to telencephalon. To investigate possible structural and functional relationships of Tbr2 and other T-box containing genes, we analyzed genomic organization of the murine Tbr2 gene. The Tbr2 gene is composed of six exons (1353, 155, 122, 159, 62 and 1035 bp), and five introns (920, 643, 602, 85 and 2036 bp). This exon/intron organization is very similar to that of Tbr1. We also analyzed the 3.9 kb sequence of the 5' promoter region flanking the Tbr2 gene and the corresponding region of the Tbr1 gene. The sites for Brn-2 and Tst-1 were found in the promoter of Tbr2 but not Tbr1. On the contrary, there were eight HNF-3β binding sites in the Tbr1 gene promoter but only three in the Tbr2 promoter. The differential presence of putative binding sites for these brain-specific transcription factors may explain the reciprocal expression of Tbr1 and Tbr2. Furthermore, a single chromosomal locus for mouse Tbr2 was assigned to 9F3 by fluorescence in-situ hybridization. (C) 2000 Elsevier Science B.V.
| Original language | English |
|---|---|
| Pages (from-to) | 29-35 |
| Number of pages | 7 |
| Journal | Gene |
| Volume | 254 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Aug 22 2000 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Genetics
Cite this
Genomic organization, sequence and chromosomal localization of the mouse Tbr2 gene and a comparative study with Tbr1. / Ueno, Masaya; Kimura, Naoki; Nakashima, Kinichi; Saito-Ohara, Fumiko; Inazawa, Johji; Taga, Tetsuya.
In: Gene, Vol. 254, No. 1-2, 22.08.2000, p. 29-35.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Genomic organization, sequence and chromosomal localization of the mouse Tbr2 gene and a comparative study with Tbr1
AU - Ueno, Masaya
AU - Kimura, Naoki
AU - Nakashima, Kinichi
AU - Saito-Ohara, Fumiko
AU - Inazawa, Johji
AU - Taga, Tetsuya
PY - 2000/8/22
Y1 - 2000/8/22
N2 - Members of the T-box family are known to play critical roles in the embryonic development of most animal species. Recently, we have isolated its new mammalian member, Tbr2, from mouse embryonic brain. We have also shown that the expression patterns of Tbr2 and the closely related Tbr1 appear to be reciprocal in the developing brain; Tbr2 is expressed in mesencephalon and rhombencephalon, but expression of Tbr1 is restricted to telencephalon. To investigate possible structural and functional relationships of Tbr2 and other T-box containing genes, we analyzed genomic organization of the murine Tbr2 gene. The Tbr2 gene is composed of six exons (1353, 155, 122, 159, 62 and 1035 bp), and five introns (920, 643, 602, 85 and 2036 bp). This exon/intron organization is very similar to that of Tbr1. We also analyzed the 3.9 kb sequence of the 5' promoter region flanking the Tbr2 gene and the corresponding region of the Tbr1 gene. The sites for Brn-2 and Tst-1 were found in the promoter of Tbr2 but not Tbr1. On the contrary, there were eight HNF-3β binding sites in the Tbr1 gene promoter but only three in the Tbr2 promoter. The differential presence of putative binding sites for these brain-specific transcription factors may explain the reciprocal expression of Tbr1 and Tbr2. Furthermore, a single chromosomal locus for mouse Tbr2 was assigned to 9F3 by fluorescence in-situ hybridization. (C) 2000 Elsevier Science B.V.
AB - Members of the T-box family are known to play critical roles in the embryonic development of most animal species. Recently, we have isolated its new mammalian member, Tbr2, from mouse embryonic brain. We have also shown that the expression patterns of Tbr2 and the closely related Tbr1 appear to be reciprocal in the developing brain; Tbr2 is expressed in mesencephalon and rhombencephalon, but expression of Tbr1 is restricted to telencephalon. To investigate possible structural and functional relationships of Tbr2 and other T-box containing genes, we analyzed genomic organization of the murine Tbr2 gene. The Tbr2 gene is composed of six exons (1353, 155, 122, 159, 62 and 1035 bp), and five introns (920, 643, 602, 85 and 2036 bp). This exon/intron organization is very similar to that of Tbr1. We also analyzed the 3.9 kb sequence of the 5' promoter region flanking the Tbr2 gene and the corresponding region of the Tbr1 gene. The sites for Brn-2 and Tst-1 were found in the promoter of Tbr2 but not Tbr1. On the contrary, there were eight HNF-3β binding sites in the Tbr1 gene promoter but only three in the Tbr2 promoter. The differential presence of putative binding sites for these brain-specific transcription factors may explain the reciprocal expression of Tbr1 and Tbr2. Furthermore, a single chromosomal locus for mouse Tbr2 was assigned to 9F3 by fluorescence in-situ hybridization. (C) 2000 Elsevier Science B.V.
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UR - http://www.scopus.com/inward/citedby.url?scp=0034702884&partnerID=8YFLogxK
U2 - 10.1016/S0378-1119(00)00290-0
DO - 10.1016/S0378-1119(00)00290-0
M3 - Article
C2 - 10974533
AN - SCOPUS:0034702884
VL - 254
SP - 29
EP - 35
JO - Gene
JF - Gene
SN - 0378-1119
IS - 1-2
ER -