Genomic structure of TBX2 indicates conservation with distantly related T-box genes

Genomic structure of TBX2 indicates conservation with distantly related T-box genes TBX2 is a member of a recently discovered gene family of transcription factors, named T-box genes after the Brachyury or T gene. Mutations in two of these family members, TBX5 and TBX3, have recently been shown to be responsible for the congenital abnormalities associated with Holt Oram syndrome and ulnar-mammary syndrome respectively, while mutations in T-box genes in other species also result in developmental abnormalities in the tissues where the gene is normally expressed. Thus, it likely that other T-box genes are responsible for additional human developmental anomalies. Here we report the exon/intron boundaries of TBX2 and a polymorphism within intron 2 of TBX2 that should be useful for exploring the involvement of this gene in human genetic disease. We further note that the exon/intron boundaries of TBX2 are highly conserved within the T-box domain with those of both T and TBX5, as well as with a new human T-box gene and more distantly related genes from Caenorhabditis elegans and Drosophila. This observation should facilitate the analysis of the genomic structure of other members of this gene family. It is also of interest that several members of this gene family have an additional intron that is variably present within members of at least two different lineages of the T-box family. This observation has implications regarding the evolution of T-box genes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Genomic structure of TBX2 indicates conservation with distantly related T-box genes

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Publisher
Springer-Verlag
Copyright
Copyright © 1998 by Springer-Verlag New York Inc
Subject
Life Sciences; Cell Biology; Anatomy; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s003359900682
Publisher site
See Article on Publisher Site

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