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Open AccessJournal ArticleDOI

Gsh-1: a novel murine homeobox gene expressed in the central nervous system

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TLDR
The characterization of Gsh‐1, a novel murine homeobox gene, is reported, with a transcript of approximately 2 kb in size present at embryonic days 10.5 to E13.5 and the consensus DNA ninding site of the GSh‐1 homeoprotein is determined to be GCT/CA/CATTAG/A.
Abstract
We report the characterization of Gsh-1, a novel murine homeobox gene. Northern blot analysis revealed a transcript of approximately 2 kb in size present at embryonic days 10.5, 11.5, and 12.5 of development. The cDNA sequence encoded a proline rich motif, a polyalanine tract, and a homeodomain with strong homology to those encoded by the clustered Hox genes. The Gsh-1 expression pattern was determined for days E8.5 to E13.5 by whole mount and serial section in situ hybridizations. Gsh-1 transcription was restricted to the central nervous system. Expression is present in the neural tube and hindbrain as two continuous, bilaterally symmetrical stripes within neural epithelial tissue. In the mesencephalon, expression is seen as a band across the most anterior portion. There is also diencephalon expression in the anlagen of the thalamus and the hypothalamus as well as in the optic stalk, optic recess, and the ganglionic eminence. Moreover, through the use of fusion proteins containing the Gsh-1 homeodomain, we have determined the consensus DNA ninding site of the Gsh-1 homeoprotein to be GCT/CA/CATTAG/A. ©1995 Wiley-Liss, Inc.

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Journal ArticleDOI

Conserved properties of the Drosophila homeodomain protein, Ind

TL;DR: It is shown that Ind's candidate Eh1 domain is essential to the embryonic repression activity of this protein, and that Groucho interacts with Ind via this domain, and aspects of the cross-repressive activities of Ind/Gsh2-Ey/Pax6 are evolutionarily conserved.
Journal ArticleDOI

Novel strategy yields candidate Gsh-1 homeobox gene targets using hypothalamus progenitor cell lines

TL;DR: The promoter of the Gsh-1 homeobox gene was used to drive expression of the SV40 T-antigen gene in transgenic mice to support models predicting that homeOBox genes function in the regulation of cell proliferation.
Journal ArticleDOI

Septal contributions to olfactory bulb interneuron diversity in the embryonic mouse telencephalon: role of the homeobox gene Gsx2

TL;DR: It is demonstrated that dLGE progenitors in the embryo also contribute to this OB neuronal subtype, and the septum is more restricted in its contribution to the CR+ subtype.
Book ChapterDOI

Basic nervous system "types": one or many?

TL;DR: In this article, a comparison of the expression, function, and regulation of genes and genetic networks involved in anteroposterior, dorsoventral, and midline patterning of the insect and vertebrate CNS suggests that orthologous genes were already involved in neural specification in a common ancestor.
Journal ArticleDOI

Transcriptional Regulation of Notch1 Expression by Nkx6.1 in Neural Stem/Progenitor Cells during Ventral Spinal Cord Development

TL;DR: The data reveal a novel mechanism of Notch1 transcriptional regulation in the ventral spinal cord by Nkx6.1 via its binding with NotCh1 enhancer CR2 during embryonic development.
References
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Book

Manipulating the mouse embryo: A laboratory manual

TL;DR: Here are recorded the tech- niques for preparing, inserting and analysing DNA sequences, for retroviral infection of mice, for production and use of EC and EK cells as vehicles for engineered sequences and for nuclear transplantation - all against a background of the basic procedures required for pro- ducing and handling the em- bryos.
Journal ArticleDOI

An analysis of 5'-noncoding sequences from 699 vertebrate messenger RNAs

TL;DR: 5'-Noncoding sequences have been compiled from 699 vertebrate mRNAs and GCCA/GCCATGG emerges as the consensus sequence for initiation of translation in vertebrates.
Journal ArticleDOI

A gene complex controlling segmentation in Drosophila.

TL;DR: The wild-type and mutant segmentation patterns are consistent with an antero-posterior gradient in repressor concentration along the embryo and a proximo-distal gradient along the chromosome in the affinities for repressor of each gene's cis-regulatory element.
Journal ArticleDOI

Transcriptional regulation in mammalian cells by sequence-specific DNA binding proteins

TL;DR: This review summarizes recent studies that define structural domains for DNA binding and transcriptional activation functions in sequence-specific transcription factors in mammalian DNA binding transcription factors.
Journal ArticleDOI

Homeobox genes and axial patterning

TL;DR: Over the past seven years, the term “homeodomain” has evolved to define a class of protein domains that have recognizable similarity to a 60 amino acid motif originally recognized in three Drosophila homeotic and segmentation proteins.
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