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151.
152.
We have mapped 13 loci on mouse Chromosome 18 by Southern blot analysis of restriction fragment length polymorphisms among progeny from an interspecific backcross: (C57BL/6J X Mus spretus) X M. spretus. Complete haplotype analysis of 136 of these progeny was used to establish gene order and estimate genetic distances between loci. The gene order (from centromere to telomere) and recombination distances (in centimorgans) were as follows: PGK-1rs5-4.3-Tpi-10-11.8-(Egr-1, Hmg17-rs9)-2.1-Fgfa-2.2-Grl-1-10.1-(Cdx-1, Csfmr, Pdgfrb, Pdea, Rps14)-2.1-Adrb-2-22.9-Mbp. Pgk-1rs5, Tpi-10, Hmg17-rs9, and Rps14 had not been previously mapped in the mouse; Egr-1 had only been syntenically assigned to mouse Chr 18. Nine of the loci, spanning 18 cM, have homologs on the distal long arm of human Chr5--a region rich in genes encoding growth factors and receptors. An additional previously unmapped gene, Drd-1, predicted to be on mouse Chr 18 based on its human chromosomal location, was mapped to the middle region of mouse Chr 13. 相似文献
153.
A family of type I keratin genes and the homeobox-2 gene complex are closely linked to the rex locus on mouse chromosome 11 总被引:4,自引:1,他引:3
J H Nadeau F G Berger D R Cox J L Crosby M T Davisson D Ferrara E Fuchs C Hart L Hunihan P A Lalley 《Genomics》1989,5(3):454-462
Type I and type II keratins are major constituents of intermediate filaments that play a fundamental role in the cytoskeletal network. By using both somatic cell hybrids and conventional and interspecific linkage crosses, several genes encoding type I keratins, including the epidermal keratin K10, were shown to be closely linked to the homeobox-2 complex and the rex locus on mouse chromosome 11. The absence of crossovers between type I keratin-encoding genes and rex (N = 239), a locus affecting hair development, raises the possibility that mutations at rex and neighboring loci affecting skin and hair development involve type I keratin genes. 相似文献
154.
Kenneth R. Johnson Sangwei Lu Michael T. Murtha Frank H. Ruddle Muriel T. Davisson 《Genomics》1992,14(4):1107-1109
A newly identified homeobox gene designated Dbx has been mapped to mouse Chromosome (Chr) 7. This gene is expressed in a restricted manner in developing mouse brain and spinal cord and has amino acid sequence similarities with members of the homeobox gene family such as Drosophila H2.0 and mouse Hlx. Using a fragment of the Dbx cDNA as a probe, a PstI restriction fragment length polymorphism was used to determine genotypes of 144 progeny from an interspecific backcross. Segregation analysis revealed linkage of Dbx with six prepositioned reference loci on mouse Chr 7. No recombination was observed between Dbx and Odc-rs6, indicating that Dbx lies approximately 25 cM distal to the Chr 7 centromere in a region that has conserved linkage relationships with regions of human Chrs 11 and 19. 相似文献
155.
156.
The mouse mutation ulnaless on chromosome 2 总被引:1,自引:0,他引:1
The dominant skeletal mutation ulnaless (Ul) in the mouse causes extreme reduction of the radius and ulna and deformities of the tibia and fibula. Penetrance appears to be complete, but the homozygote is not known, as heterozygous males do not breed. We report the linkage of the Ul gene on Chromosome 2, 18 cM proximal to pallid (pa), and describe its phenotypic effects. 相似文献
157.
158.
Sandy: a new mouse model for platelet storage pool deficiency 总被引:4,自引:0,他引:4
Sandy (sdy) is a mouse mutant with diluted pigmentation which recently arose in the DBA/2J strain. Genetic tests indicate it is caused by an autosomal recessive mutation on mouse Chromosome 13 near the cr and Xt genetic loci. This mutation is different genetically and hematologically from previously described mouse pigment mutations with storage pool deficiency (SPD). The sandy mutant has diluted pigmentation in both eyes and fur, is fully viable and has prolonged bleeding times. Platelet serotonin levels are extremely low although ATP dependent acidification activity of platelet organelles appears normal. Also, platelet dense granules are extremely reduced in number when analysed by electron microscopy of unfixed platelets. Platelets have abnormal uptake and flashing of the fluorescent dye mepacrine. Secretion of lysosomal enzymes from kidney and from thrombin-stimulated platelets is depressed 2- and 3-fold, and ceroid pigment is present in kidney. Sandy platelets have a reduced rate of aggregation induced by collagen. The sandy mutant has an unusually severe dense granule defect and thus may be an appropriate model for cases of human Hermansky-Pudlak syndrome with similarly extreme types of SPD. It represents the tenth example of a mouse mutant with simultaneous defects in melanosomes, lysosomes and/or platelet dense granules. 相似文献
159.
M T Davisson P A Lalley J Peters D P Doolittle A L Hillyard A G Searle 《Cytogenetics and cell genetics》1990,55(1-4):434-456