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The genes encoding α 1 -antitrypsin (α1AT, gene symbolPI) and corticosteroid-binding globulin (CBG) are part of a cluster of six serine protease inhibitor (serpin) genes located on human chromosome 14q32.1. Both genes are actively transcribed in the liver and in human hepatoma cells, but they are not expressed in most other cell types. In this study we mapped DNase I-hypersensitive sites (DHSs)...
We have constructed a collection of canine–rodent microcell hybrid cell lines by fusion of canine fibroblast microcell donors with immortalized rodent recipient cells. Characterization of the hybrid cell lines using a combination of fluorescencein situhybridization and PCR analysis of canine microsatellite repeat sequences allowed selection of a panel of hybrids in which most canine chromosomes are...
The human genes encoding α1-antitrypsin (α1AT, gene symbol PI), corticosteroid-binding globulin (CBG), α1-antichymotrypsin (AACT), and protein C inhibitor (PCI) are related by descent, and they all map to human chromosome 14q32.1. This serine protease inhibitor (serpin) gene cluster also contains an antitrypsin-related sequence (ATR, gene symbol PIL), but the precise molecular organization of this...
Abstract. The genes encoding 1-antitrypsin (1AT; gene symbol PI) and corticosteroid-binding globulin (CBG) are part of a cluster of structurally related serine protease inhibitor (serpin) genes on human Chromosome (Chr) 14q32.1. This cluster also includes the genes encoding 1-antichymotrypsin (AACT) and protein C inhibitor (PCI), as well as an 1-antitrypsin-related sequence (ATR; gene symbol PIL)...
Expression of the serum albumin gene is extinguished in rat hepatoma microcell hybrids that retain mouse chromosome 1. These data define atrans-dominant extinguisher locus,Tse-2,on mouse chromosome 1. To localize the human TSE2 locus, we prepared and characterized rat/human microcell hybrids that contained either human chromosome 1 or chromosome 2, the genetic homologues of mouse chromosome 1. Rat...
Chicken cell lines derived from avian leukosis virus-induced B-cell tumors are highly recombination-proficient. In these cells, homologous recombination between transfected DNA sequences and the corresponding chromosomal alleles occurs at high frequency, and targeting efficiencies of 10–90% can be obtained. We previously described a chromosome shuttle approach in which these cells can be used to modify...
Genes expressed from a defined genomic interval can be cloned using interspecific microcell hybrids and subtractive hybridization. This approach involves identifying a pair of interspecific hybrids that contain nearly isogenic fragments of a relevant chromosome, except for a region of nonoverlap encompassing the locus of interest. Radiolabeled cDNAs are synthesized from the hybrid cell line that contains...
We have cloned human genes that are encoded in the region 17q12-q23 and expressed in breast tissue using interspecific somatic cell hybrids and subtractive hybridization. Two mouse microcell hybrids containing fragments of human chromosome 17 with a nonoverlap region at 17q12-q23 were generated by microcell transfer. Radiolabeled cDNA was synthesized from the hybrid cell containing the 17q12-q23 interval...
We have recently identified a cis-acting genetic lesion affecting angiotensinogen gene expression in testis and salivary gland. Accordingly, the angiotensinogen gene was assigned to mouse chromosome 8 by screening a series of hybrid cell lines for retention of mouse angiotensinogen sequences by genomic Southern analysis. In AKXD recombinant inbred mice, the angiotensinogen gene is 2.4 +/- 1.8 centiMorgan...
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