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The cadherin-related neuronal receptor (CNR) family is localized to the synaptic junction, and their cytoplasmic domains interact with Fyn-tyrosine kinase. Here, we describe the chromosomal locations and the orthologous genomic structures of CNR family members in mice and humans. In the genomic organization, distinct exons, each of which encodes the N-terminus of a different CNR (“variable region”),...
Tropomodulin (TMOD) is the actin-capping protein for the slow-growing end of filamentous actin, and a neuronal-specific isoform, neuronal tropomodulin (NTMOD), is the major binding protein to brain tropomyosin in rat. The Drosophila TMOD homolog, Sanpodo, alters sibling cell fate determination, so we used a cross-species approach to identify additional TMOD family members that may play a critical...
The bromodomain is a 110-amino-acid conserved structural region associated with proteins that regulate signal-dependent, nonbasal transcription. The bromodomain can regulate histone acetyl transferase activity and interacts specifically with acetylated lysine residues. A key role for bromodomain proteins in maintaining normal proliferation is indicated by the implication of several bromodomain proteins...
MAGOH is the human homologue of Drosophila mago nashi, a protein that is required for normal germ plasm development in the Drosophila embryo. Using human MAGOH as a bait protein in a yeast two-hybrid screen, we recovered four independent cDNA clones that encode different lengths of a novel protein containing a conserved RNA-binding region. This gene, designated RBM8, encodes a 173-aa protein that...
The cDNA for the trypsin-like serine protease gene (TLSP, HGMW-approved symbol PRSS20) has been recently identified. TLSP is expressed in brain and skin tissues but little else is known about this new serine protease gene. In this paper, we describe the complete genomic organization and precise mapping of the TLSP gene. This gene spans 5.3 kb of genomic sequence on chromosome 19q13.3–q13.4. The gene...
A new human LIM domain gene LMCD1 was identified from RT-PCR products, and partial sequencing of two expressed sequence tag clones flanking the assembled cDNA contig revealed a 1743-bp full-length cDNA with 1098-bp open reading frame. The coding sequence of the putative protein is 57.6% identical to murine testin 1 gene (Tes1), whereas the predicted 365-amino-acid protein is 49.5% identical to the...
Consecutive application of PCR and serial analysis of gene expression (SAGE) was used to generate a catalog of ∼50,000 SAGEtags from nine human oocytes. Matches for known genes were identified using the National Institutes of Health SAGEtag database. This database links directly to the UniGene database, providing rapid discrimination between SAGEtags that match known genes and expressed sequence tags...
Retropseudogenes are intronless DNA sequences sharing a high degree of homology with the cDNA of their corresponding active genes. They are thought to have originated by reverse transcription of messenger RNA and reintegration of the cDNA into the genome. Usually considered a type of evolutionary waste, they melt into the background of their surrounding DNA by the loss of similarity to the active...
The bromodomain is a structural motif characteristic of proteins involved in chromatin-dependent regulation of transcription. Bromodomain proteins have been identified as integral components of chromatin remodeling complexes and frequently possess histone acetyltransferase activity. Their encoding genes have been identified at translocation breakpoints, and at least one, CBP, is a tumor suppressor...
DXS6673E is a candidate gene for nonspecific X-linked mental retardation and encodes a novel Zn-finger protein. The ortholog murine gene DXHXS6673E in XC-D was isolated and characterized. It is ubiquitously expressed in all embryonic stages and adult tissues. Two different transcription start sites exist that result in two major transcripts of 6055 and 5352 nucleotides, each composed of 25 exons....
The genomic sequence of the human Jagged2 (JAG2) gene, which encodes a ligand for the Notch receptors, was determined. The 30-kb DNA sequence spanning the JAG2 gene contains 26 exons and a putative promoter region. Several potential binding sites for transcription factors, including NF-κb, E47, E12, E2F, Ets-1, MyoD, and OCT-1, were found in the human JAG2 promoter region. The JAG2 gene was also mapped...
Genetic lesions in the p53 tumor suppressor gene are the most frequently observed alterations in human cancers. Typically in tumors, one allele of the p53 gene is initially mutated, followed by deletion of the remaining wildtype allele. In human colon cancer, for example, approximately 70% of late stage tumors are hemizygous mutant p53. Since the precise gene environment surrounding the p53 gene is...
The wunen gene of Drosophila melanogaster encodes a multipass membrane-spanning protein that negatively regulates primordial germ cell migration. Here we describe the cloning of a mouse gene that encodes a protein homologous to wunen and to the Type 2 phosphatidic acid phosphatases. This gene encodes a 251-amino-acid protein that most closely resembles the human Type 2 phosphatidic acid phosphatase...
We report the localization of DFNA20, a gene causing dominant, nonsyndromic, progressive hearing loss in a three-generation Midwestern family, to chromosome 17q25. Affected family members show a bilateral, sloping, progressive, sensorineural hearing loss, first evident at 6000 and 8000 Hz, that can be identified in some family members in the early teens and is clearly evident by the early twenties...
The discussion of the prospects of using a dense map of single nucleotide polymorphisms (SNPs) to identify disease genes with association analysis has been extensive. However, there is little empiric evidence to support this strategy. To begin to examine the practical issues surrounding this methodology, we identified 10 SNPs in the region immediately surrounding the apolipoprotein E locus (APOE),...
We previously identified a novel protein kinase, Hunk, by means of a degenerate PCR screen designed to isolate kinases expressed in the murine mammary gland. We now describe the molecular cloning, chromosomal localization, and activity of this kinase and characterize its spatial and temporal pattern of expression in the mouse. We have isolated a 5.0-kb full-length cDNA clone that contains the 714-amino-acid...
We recently characterized a genomic region located upstream of the mouse pre-T cell receptor α (pTa) gene, which controls pTa expression in pre-T cells. We now report an unexpected homology between this region and a region in the mouse X chromosome inactivation center between the 3′ end of the Xist gene and the start of an antisense transcript Tsix. The homology is extended over 4 kb of genomic sequence...
SOX proteins are transcription factors that are characterized by a common DNA-binding motif known as the HMG domain. We describe the 5.4-kb human SOX8 gene that codes for a 446-amino-acid protein and that is expressed strongly in brain and less abundantly in other tissues. SOX8 shows an overall identity of 47% to SOX9 and SOX10. The latter two possess a C-terminal transactivation domain, whereas in...
As a result of intensive studies on hereditary breast and ovarian cancers, two breast cancer susceptibility genes, BRCA1 and BRCA2, have been identified. In each gene, a small number of specific mutations have been found at relatively high frequency in certain ethnic populations. The mutations, 185delAG and 5382insC in BRCA1 and 6174delT in BRCA2, have been identified as common mutations in the Ashkenazi...
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