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排序方式: 共有179条查询结果,搜索用时 15 毫秒
71.
Eva M. Eicher Ralph H. Stern James E. Womack Muriel T. Davisson Thomas H. Roderick Sallie C. Reynolds 《Biochemical genetics》1976,14(7-8):651-660
Electrophoretic variants of two carbonic anhydrase enzymes, CAR-1 (CA I) and CAR-2 (CA II), have been found in the laboratory mouse, Mus musculus. These two loci are closely linked to each other and are located on chromosome 3 near its centromere. The close linkage of Car-1 and Car-2 supports the hypothesis that the present-day carbonic anhydrase loci are the result of tandem duplication of an earlier carbonic anhydrase locus with subsequent divergence. The red blood cells of mice of the subspecies M. m. casteneus have significantly reduced levels of CAR-1 and CAR-2.This research was supported in part by Research Grants GM-20919 from the National Institute of General Medical Sciences and CA-01074 from the National Cancer Institute, and by Contracts E(11-1)-3267 with the Energy Research and Development Administration and NO1-ES-4-2159 with the National Institute of Environmental Health Sciences. The Jackson Laboratory is fully certified by the American Association for Accreditation of Laboratory Animal Care. 相似文献
72.
Heart failure affects 23 million people worldwide and results from cardiac dysfunction characterized by decreased responsiveness to beta-adrenergic stimulation. A recent publication by W.J. Koch and colleagues highlights evidence for targeted beta-adrenergic receptor kinase (betaARK1) inhibition by gene transfer to improve contractile function and beta-adrenergic responsiveness in failing human myocardium. This proof-of-concept study has great importance for future heart failure therapy because it provides evidence for the therapeutic effectiveness of betaARK1 inhibition in failing human myocardium. 相似文献
73.
DNA Sequence Analysis of Sry Alleles (Subgenus Mus) Implicates Misregulation as the Cause of C57bl/6j-Y(pos) Sex Reversal and Defines the Sry Functional Unit 下载免费PDF全文
The Sry (sex determining region, Y chromosome) open reading frame from mice representing four species of the genus Mus was sequenced in an effort to understand the conditional dysfunction of some M. domesticus Sry alleles when present on the C57BL/6J inbred strain genetic background and to delimit the functionally important protein regions. Twenty-two Sry alleles were sequenced, most from wild-derived Y chromosomes, including 11 M. domesticus alleles, seven M. musculus alleles and two alleles each from the related species M. spicilegus and M. spretus. We found that the HMG domain (high mobility group DNA binding domain) and the unique regions are well conserved, while the glutamine repeat cluster (GRC) region is quite variable. No correlation was found between the predicted protein isoforms and the ability of a Sry allele to allow differentiation of ovarian tissue when on the C57BL/6J genetic background, strongly suggesting that the cause of this sex reversal is not the Sry protein itself, but rather the regulation of SRY expression. Furthermore, our interspecies sequence analysis provides compelling evidence that the M. musculus and M. domesticus SRY functional domain is contained in the first 143 amino acids, which includes the HMG domain and adjacent unique region (UR-2). 相似文献
74.
Priscilla K. Tucker Richard D. Sage John Warner Allan C. Wilson Eva M. Eicher 《Evolution; international journal of organic evolution》1992,46(4):1146-1163
We compared the patterns of movement of sex chromosomal and autosomal loci along a 160 km transect across a zone of hybridization between M. domesticus and M. musculus in southern Germany and western Austria using seven genetic markers. These included one Y-specific DNA sequence (YB10), two X-specific loci (DXWas68 and DXWas31), and four autosomal isozyme loci (Es-10, Es-1, Mpi-1, and Np-1). Random effects logistic regression analysis enabled us to examine the relationship between M. domesticus allele frequency and geographic distance from the western edge of the hybrid zone and allowed statistical evaluation of differences in cline midpoint and width among loci. More limited movement was observed for all three sex chromosomal markers across the zone compared with three of the four autosomal markers. If differential movement reflects fitness differences of specific alleles (or alleles at closely linked loci) on a hybrid background, then alleles that move to a limited extent across a hybrid zone may contribute to hybrid breakdown between two species. The limited flow of both X- and Y-specific alleles suggest that sex chromosomes have played an important role in Mus speciation. 相似文献
75.
The Position of ru-2 and qv with Respect to the FLECKED Translocation in the Mouse 总被引:4,自引:1,他引:3 下载免费PDF全文
Eicher EM 《Genetics》1970,64(3-4):495-510
76.
Clara Correia‐Melo Francisco DM Marques Rhys Anderson Graeme Hewitt Rachael Hewitt John Cole Bernadette M Carroll Satomi Miwa Jodie Birch Alina Merz Michael D Rushton Michelle Charles Diana Jurk Stephen WG Tait Rafal Czapiewski Laura Greaves Glyn Nelson Mohammad Bohlooly‐Y Sergio Rodriguez‐Cuenca Antonio Vidal‐Puig Derek Mann Gabriele Saretzki Giovanni Quarato Douglas R Green Peter D Adams Thomas von Zglinicki Viktor I Korolchuk João F Passos 《The EMBO journal》2016,35(7):724-742
77.
A Repeated Segment on the Mouse Y Chromosome Is Composed of Retroviral-Related, Y-Enriched and Y-Specific Sequences 总被引:7,自引:2,他引:5
We report the isolation and characterization of two recombinant clones containing DNA derived from the Y chromosome of the C57BL/10 inbred mouse strain. Both clones were isolated from a lambda phage library derived from a partial EcoRI digest of C57BL/10 male DNA using the murine retrovirus M720. Characterization of these clones showed they were derived from a repeated segment present on the C57BL/10J Y chromosome that contains sequences found elsewhere in the genome. In addition, one clone contained a sequence, designated YB10, that is unique to the Y chromosome and present in approximately 500 copies on the C57BL/10J Y chromosome. Analysis of Southern blots containing DNAs prepared from females and males of representative species from four subgenera of Mus probed with pYB10 and the 3'LTR from one of the Y-associated retroviruses (MuRVY) revealed that, with the exception of a single fragment observed in both female and male DNA of Mus saxicola, hybridization to pYB10 was observed only to male DNA of the species Mus spretus, Mus hortulanus, Mus musculus, Mus domesticus and Mus abbotti. In addition, the pattern and intensity of hybridization to YB10 and the MuRVY-LTR indicated that sequence of divergence was followed by amplification of Y chromosome sequences containing YB10 and MuRVY. The divergence and amplification occurred separately in each of the ancestral lineages leading to M. spretus, M. hortulanus, M. abbotti, M. musculus and M. domesticus. We suggest that acquisition and amplification of DNA sequences by the mammalian Y chromosome has contributed to its evolution and may imply that the mammalian Y chromosome is evolving at a faster rate than the rest of the genome. 相似文献
78.
Linda D. Siracusa Liane B. Russell Eva M. Eicher Dorcas J. Corrow Neal G. Copeland Nancy A. Jenkins 《Genetics》1987,117(1):93-100
The agouti locus on mouse chromosome 2 acts via the hair follicle to control the melanic type and distribution of hair pigments. The diverse phenotypes associated with various agouti mutations have led to speculation about the organization of the agouti locus. Earlier studies indicated that two presumed agouti alleles, lethal yellow (Ay) and lethal light-bellied nonagouti (ax), are pseudoallelic. We present genetic data showing probable recombination between Ay and three agouti mutations (at, a, and ax), which suggest that Ay is a pseudoallele of the agouti locus. The close linkage of an endogenous ecotropic murine leukemia provirus, Emv-15, to Ay provides a molecular access to genes at or near the agouti locus. However, previous studies suggested that the Emv-15 locus can recombine with some agouti alleles and therefore we analyzed mice from recombinant inbred strains and backcrosses to measure the genetic distance between various agouti alleles and the Emv-15 locus. Our data indicate that the Emv-15 locus is less than 0.3 cM from the agouti locus. These experiments provide a conceptual framework for initiating chromosome walking experiments designed to retrieve sequences from the agouti locus and give new insight into the genetic organization of the agouti region. 相似文献
79.
80.