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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Mapping and expression analysis of the mouse ortholog of Xenopus Eomesodermin.

The T-box gene family has been conserved throughout metazoan evolution. The genes code for putative transcription factors which share a uniquely defining DNA binding domain, known as the T-box ([Bollag et al., 1994]). They are implicated in the control of diverse developmental processes by their highly specific expression patterns throughout gastrulation and organogenesis in mouse and other species ([Chapman et al., 1996]) ([Gibson-Brown et al., 1998]), and by mutations in T-box genes that have profound developmental effects ([Papaioannou, 1997]; [Chapman and Papaioannou, 1998]; [Papaioannou and Silver, 1998]). In this report, we describe the mapping and expression pattern of the mouse ortholog of a gene, Eomesodermin, first identified in Xenopus ([Ryan et al., 1996]). The mouse gene was previously reported ([Wattler et al., 1998]) under the name MmEomes. The gene maps to mouse chromosome 9 in a region syntenic with human chromosome 3p. Mouse eomesodermin is expressed in the trophoblast of the blastocyst and in its derivative, the chorionic ectoderm. At gastrulation, eomesodermin is expressed in the primitive streak and embryonic mesoderm as well, but this expression disappears prior to the end of gastrulation. Later, eomesodermin is expressed in the developing forebrain, in a pattern largely overlapping a closely related T-box gene, Tbr1 ([Bulfone et al., 1995]), and is also seen in a localized area of each limb.[1]


  1. Mapping and expression analysis of the mouse ortholog of Xenopus Eomesodermin. Hancock, S.N., Agulnik, S.I., Silver, L.M., Papaioannou, V.E. Mech. Dev. (1999) [Pubmed]
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