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EMBO J
1986 Jun 01;56:1237-44. doi: 10.1002/j.1460-2075.1986.tb04352.x.
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Embryonic expression and nuclear localization of Xenopus homeobox (Xhox) gene products.
Harvey RP
,
Tabin CJ
,
Melton DA
.
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We have isolated a Xenopus genomic clone (Xhox-1) that contains two homeoboxes, at least one of which is highly conserved in vertebrates. Two transcripts are derived from Xhox-1 and these are present from early in development through swimming tadpole stages. A detailed analysis of one of the genes shows that it is expressed maternally and that transcription from the zygotic genome begins at mid-gastrulation. Examination of exogastrula shows that the expression of these genes does not depend on neural induction. We have determined the DNA sequence of a Xhox-1 cDNA and this allows us to predict the complete sequence of a vertebrate homeobox protein. Synthetic mRNAs made from this cDNA are translated efficiently in Xenopus oocytes where the homeobox protein localizes to the oocytenucleus.
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