Mouse Sebox homeobox gene expression in skin, brain, oocytes, and two-cell embryos.
Sebox is a mouse paired-like homeobox gene, previously named OG-9. Sebox genomic DNA and cDNA were cloned and sequenced. In addition, rat and human Sebox genomic DNAs were cloned and sequenced, and the predicted amino acid sequences were compared. The mouse Sebox gene was mapped to chromosome 11 near the Evi 2 locus. The mouse Sebox gene is expressed in brain, skin, ovary, and liver of mice. In the brain, the Sebox gene is expressed in the cerebral cortex and CA areas of the hippocampus, pontine nuclei, choroid plexus, and the cerebellum. Northern analysis and RNase protection assays revealed low levels of Sebox RNA in 12-day mouse embryos and higher levels in 18- and 19-day embryos. In late embryos and newborn mice, Sebox expression is localized in the epidermis. In adult mice, Sebox RNA was found in maturing oocytes and in fertilized eggs; however, the abundance of Sebox RNA is decreased in the two-cell embryo, and little or none was detected in the four-cell embryo. Hence, Sebox is a maternally expressed homeobox gene.
Laboratory of Biochemical Genetics, National Heart, Lung and Blood Institute, and Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
M
M
Cinquanta
A C
AC
Rovescalli
C A
CA
Kozak
M
M
Nirenberg
D000595:Amino Acid Sequence; D000818:Animals; D000831:Animals, Newborn; D001483:Base Sequence; D001921:Brain / Q000378:metabolism*; D002874:Chromosome Mapping; D002970:Cleavage Stage, Ovum / Q000378:metabolism*; D018076:DNA, Complementary; D047108:Embryonic Development; D005260:Female; D005801:Genes, Homeobox; D018398:Homeodomain Proteins / Q000235:genetics*; D006801:Humans; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D009865:Oocytes / Q000378:metabolism*; D011247:Pregnancy; D051381:Rats; D017207:Rats, Sprague-Dawley; D017386:Sequence Homology, Amino Acid; D012867:Skin / Q000378:metabolism*
D018076:DNA, Complementary; D018398:Homeodomain Proteins; C485871:Og9x protein, mouse; C412685:SEBOX protein, human; C485872:Sebox protein, rat