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We recently identified a novel human sialic acid binding immunoglobulin-like lectin, Siglec-8, using mRNA from human eosinophils. To search for a mouse Siglec (mSiglec) ortholog of Siglec-8 and other mouse Siglec paralogs, we conducted public database searches with cDNA sequences of human Siglec-5 to -10 and identified two novel mSiglecs. One has significant sequence identity to human Siglec-5 and...
Nonsyndromic inherited hearing impairment is genetically heterogeneous. Up to now, approximately 51 autosomal dominant loci implicated in nonsyndromic forms of hearing impairment have been reported in humans and 17 causative genes have been identified. Skipping of exon 8 in the DFNA5 gene has been shown to cause hearing impairment in a Dutch family. To our knowledge, no other DFNA5 mutation has been...
The murine Pax7 gene has emerged as an important regulator of neural and somite development. It is expressed in discrete domains of the central nervous system, including cranial neural crest, dorsal neural tube, and mesencephalic tectum, pretectum, and base, and at the midbrain-hindbrain boundary. It is also expressed by nasal epithelia and neural crest-derived facial structures. Here, we define the...
A gorilla fosmid library of 261,120 independent clones was constructed and characterized. The fosmid vector is similar to the cosmid in average insert size of ca. 40 kb but contains the F factor for replication, and it is more resistant to recombination. This clone library represents about 3.7 times coverage of the gorilla genome. A simple screening system by PCR was established, and we successfully...
We have attempted to identify regions involved in the transcriptional regulation of the DAT1 (HUGO approved symbol SLC6A3) gene that may harbor functional variants predisposing to several neuropsychiatric disorders by examining haplotypes of various 5' and intronic regions for their effect on expression in a dopaminergic cell line. A 1.5-fold difference in regulatory activity was observed between...
A noncoding C3435T mutation in exon 26 of the ABCB1 gene was found to be often associated with a G2677T(A) mutation in exon 21 encoding an Ala893Ser P-glycoprotein and with a noncoding C1236T mutation in exon 12. We developed a Pyrosequencing screening method that simultaneously detects all three mutations. After separate PCRs for each exon, the sequences around the potentially mutated nucleotide...
POLH and POLI are paralogs encoding low-fidelity, class Y, DNA polymerases involved in replication of damaged DNA in the human disease xeroderma pigmentosum variant. Analysis of genomic regions for human and mouse homologs, employing the analytic tool Genome Cryptographer, detected low-repetitive or unique regions at exons and other potential control regions, especially within intron I of human POLH...
We developed a simple method, based on the TaqMan technology, for fast genotyping of insertion/deletion polymorphisms of known location. The genotypes of 22 CEPH individuals, previously ascertained by conventional methods, were confirmed in the new assay without manual, time-consuming, post-PCR analysis. We propose to expand the application of TaqMan probes for population screening of insertion/deletion...
2',5'-Oligoadenylate synthetases (2',5'-OASs) are interferon-inducible enzymes. Some of these proteins play an important role in cellular physiology, in particular, in the innate defense mechanisms against RNA virus infections. In the present publication we report the complete genomic structure of the cluster of genes encoding mouse 2',5'-OAS, with all its transcription units, their predicted functions,...
G-protein-coupled receptors (GPCRs) are important mediators of signal transduction, and mutations in GPCR-encoding genes can lead to disease states. Here we describe a null mutation in an orphan GPCR-encoding gene that is predicted to inactivate completely the encoded receptor. The TA 3 receptor is a putative member of the recently described mammalian trace amine receptor family, and it is...
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