A 1.2-Mb YAC contig spans the quaking region. 1994

R D Cox, and A Shedlovsky, and R Hamvas, and M Goldsworthy, and J Whittington, and C S Connelly, and W F Dove, and H Lehrach
Genome Analysis Laboratory, Imperial Cancer Research Fund, London, United Kingdom.

We describe here a 1.2-Mb yeast artificial chromosome (YAC) contig within the region of mouse chromosome 17 between Brachyury (T) and D17Rp17e, and spanning the quaking (qk) region. We describe six new probes distributed across 1.2 Mb: D17Leh502, D17Leh503, D17Leh504, D17Leh505, D17Leh506, and D17Leh507. Probes D17Leh502 and D17Leh507 are at the extreme ends of the YAC contig. With the exception of D17Leh507, all of these probes are within a deletion associated with the quaking(viable) (qkv) allele of quaking. We have positioned these probes on a detailed YAC physical map together with two previously published probes, D17Leh508 and D17Aus119. We show here that D17Leh508 is also within the qkv deletion. Genetic mapping of D17Leh504 and D17Leh507 on two high-resolution genetic crosses carrying qkv and quaking(lethal-1) (qkl-1) alleles shows that these probes do not recombine with quaking and are therefore within 0.04 cM of qkv and 0.05 cM of qkl-1 mutations. The deletion breakpoint contained within the YAC contig has been positioned to within 90 kb by restriction mapping of wildtype and mutant DNA. This contig will form the basis for identification and mapping of expressed sequences and for an investigation of genome organization.

UI MeSH Term Description Entries
D008811 Mice, Inbred DBA An inbred strain of mouse. Specific substrains are used in a variety of areas of BIOMEDICAL RESEARCH such as DBA/1J, which is used as a model for RHEUMATOID ARTHRITIS. Mice, DBA,Mouse, DBA,Mouse, Inbred DBA,DBA Mice,DBA Mice, Inbred,DBA Mouse,DBA Mouse, Inbred,Inbred DBA Mice,Inbred DBA Mouse
D008821 Mice, Quaking Mice homozygous for the mutant autosomal recessive gene, quaking (qk), associated with disorder in myelin formation and manifested by axial tremors. Quaking Mice
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D003433 Crosses, Genetic Deliberate breeding of two different individuals that results in offspring that carry part of the genetic material of each parent. The parent organisms must be genetically compatible and may be from different varieties or closely related species. Cross, Genetic,Genetic Cross,Genetic Crosses
D005819 Genetic Markers A phenotypically recognizable genetic trait which can be used to identify a genetic locus, a linkage group, or a recombination event. Chromosome Markers,DNA Markers,Markers, DNA,Markers, Genetic,Genetic Marker,Marker, Genetic,Chromosome Marker,DNA Marker,Marker, Chromosome,Marker, DNA,Markers, Chromosome
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015342 DNA Probes Species- or subspecies-specific DNA (including COMPLEMENTARY DNA; conserved genes, whole chromosomes, or whole genomes) used in hybridization studies in order to identify microorganisms, to measure DNA-DNA homologies, to group subspecies, etc. The DNA probe hybridizes with a specific mRNA, if present. Conventional techniques used for testing for the hybridization product include dot blot assays, Southern blot assays, and DNA:RNA hybrid-specific antibody tests. Conventional labels for the DNA probe include the radioisotope labels 32P and 125I and the chemical label biotin. The use of DNA probes provides a specific, sensitive, rapid, and inexpensive replacement for cell culture techniques for diagnosing infections. Chromosomal Probes,DNA Hybridization Probe,DNA Probe,Gene Probes, DNA,Conserved Gene Probes,DNA Hybridization Probes,Whole Chromosomal Probes,Whole Genomic DNA Probes,Chromosomal Probes, Whole,DNA Gene Probes,Gene Probes, Conserved,Hybridization Probe, DNA,Hybridization Probes, DNA,Probe, DNA,Probe, DNA Hybridization,Probes, Chromosomal,Probes, Conserved Gene,Probes, DNA,Probes, DNA Gene,Probes, DNA Hybridization,Probes, Whole Chromosomal
D016386 Chromosome Walking A technique with which an unknown region of a chromosome can be explored. It is generally used to isolate a locus of interest for which no probe is available but that is known to be linked to a gene which has been identified and cloned. A fragment containing a known gene is selected and used as a probe to identify other overlapping fragments which contain the same gene. The nucleotide sequences of these fragments can then be characterized. This process continues for the length of the chromosome. Chromosome Walkings,Walking, Chromosome,Walkings, Chromosome
D017384 Sequence Deletion Deletion of sequences of nucleic acids from the genetic material of an individual. Deletion Mutation,Deletion Mutations,Deletion, Sequence,Deletions, Sequence,Mutation, Deletion,Mutations, Deletion,Sequence Deletions

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