title: Structure and expression of Hox-2.2, a murine homeobox-containing gene.
abstract: The Hox-2.2 gene is one of a cluster of homeobox-containing genes on mouse chromosome 11. A cDNA clone containing the Hox-2.2 homeobox has been isolated from an adult spinal cord library. Our analysis of the Hox-2.2 cDNA and genomic clones indicates that there are at least two oxons and one intron. The largest open reading frame includes the homeobox and codes for a 224 amino acid protein of molecular weight 25,312. Comparisons of the predicted Hox-2.2 protein with other homeodomain-containing proteins revealed four regions of sequence similiarity: an N-terminal octapeptide, a hexapeptide upstream of the homeodomain, the homeodomain, and a glutamic acid-rich region at the C terminus. Possible functions of these regions are discussed. The Hox-2.2 gene is expressed in 13.5-day embryos in the developing hindbrain and spinal cord. The expression patterns of Hox-2.2 and Hox-2.1 in 13.5-day embryos are compared.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D004247:DNA / Q000235:genetics; D005091:Exons; D005786:Gene Expression Regulation; D005801:Genes, Homeobox; D007438:Introns; D051379:Mice; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010455:Peptides / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D010455:Peptides; D012333:RNA, Messenger; D004247:DNA