Gsh-1: a novel murine homeobox gene expressed in the central nervous system.
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 binding site of the Gsh-1 homeoprotein to be GCT/CA/CATTAG/A.
Valerius
M T
MT
Division of Basic Science Research, Children's Hospital Research Foundation, University of Cincinnati College of Medicine, Ohio 45229, USA.
Li
H
H
Stock
J L
JL
Weinstein
M
M
Kaur
S
S
Singh
G
G
Potter
S S
SS
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D001921:Brain / Q000196:embryology / Q000502:physiology*; D018076:DNA, Complementary / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics; D004926:Escherichia coli / Q000201:enzymology / Q000235:genetics; D018507:Gene Expression Regulation, Developmental / Q000235:genetics; D005801:Genes, Homeobox / Q000235:genetics*; D005982:Glutathione Transferase / Q000235:genetics; D017403:In Situ Hybridization; D051379:Mice; D008969:Molecular Sequence Data; D009841:Oligonucleotides / Q000235:genetics; D016133:Polymerase Chain Reaction; D011993:Recombinant Fusion Proteins / Q000235:genetics
D018076:DNA, Complementary; D004268:DNA-Binding Proteins; D009841:Oligonucleotides; D011993:Recombinant Fusion Proteins; D005982:Glutathione Transferase