Physical mapping of the albino-deletion complex in the mouse to localize alf/hsdr-1, a locus required for neonatal survival.

Physical mapping of the albino-deletion complex in the mouse to localize alf/hsdr-1, a locus required for neonatal survival.
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对小鼠白化缺失复合物进行物理定位,以定位 alf/hsdr-1(新生儿存活所需的基因座)。

DOI:
10.1016/s0888-7543(05)80217-4
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发表时间:
1992
期刊:
影响因子:
4.4
通讯作者:
Schütz,G
Schütz,G
中科院分区:
生物学3区
文献类型:
--
作者:
Kelsey,G;Schedl,A;Ruppert,S;Niswander,L;Magnuson,T;Klebig,ML;Rinchik,EM;Schütz,G

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The albino-deletion complex in the mouse defines a genetically well-characterized region of chromosome 7 in which a number of loci essential for normal development and viability reside. One locus, designatedalforhsdr-1, is necessary for neonatal survival. Its absence results in hypoglycemia associated with biochemical and ultrastructural abnormalities in hepatocytes and proximal tubule cells of the kidney. We constructed a long-range physical map of the region defined by the proximal segment of the albino-deletion complex as a step toward localizingalf/hsdr-1. Sixteen markers, including 11 whose isolation is described here and in the accompanying paper (A. Schedlet al., 1992,Genomics14, 288–297), were ordered on a panel of albino-deletion DNAs and their distribution was examined by pulsed-field gel electrophoresis. The resulting ≈4300-kb physical map covers the entire region absent from the prototypicalf/hsdr-1deletionC14CoS, estimated as ≈3600 kb. Since the deletionc11DSDcomplements and overlaps most ofc14CoS, alf/hsdr-1was mapped at the proximal extreme ofc14CoS, ≈3000 kb from the albino locus. The density of CpG islands was found to be very heterogeneous across the region mapped.
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