scholarly journals New molecular markers for the distal end of the t-complex and their relationships to mutations affecting mouse development.

Genetics ◽  
1992 ◽  
Vol 131 (1) ◽  
pp. 175-182 ◽  
Author(s):  
T Ebersole ◽  
F Lai ◽  
K Artzt
Keyword(s):  
Molecular Markers ◽  
Mouse Chromosome ◽  
Length Polymorphism ◽  
Rflp Analysis ◽  
Chromosome 17 ◽  
Cosmid Library ◽  
Sequence Length ◽  
Mouse Development ◽  
T Complex ◽  
T Haplotype

Abstract Many mutations affecting mouse development have been mapped to the t-complex of mouse chromosome 17. We have obtained 17 cosmid clones as molecular markers for this region by screening a hamster-mouse chromosome 17 and 18 cell hybrid cosmid library with mouse-specific repetitive elements and mapping positive clones via t-haplotype vs. C3H restriction fragment length polymorphism (RFLP) analysis. Twelve of the clones mapping distal to Leh66B in t-haplotypes are described here. Using standard RFLP analysis or simple sequence length polymorphism between t-haplotypes, exceptional partial t-haplotypes and nested sets of inter-t-haplotype recombinants, five cosmids have been mapped in or around In(17)3 and seven in the most distal inversion In17(4). More precise mapping of four of the cosmids from In(17)4 shows that they will be useful in the molecular identification of some of the recessive lethals mapped to the t-complex: two cosmids map between H-2K and Crya-1, setting a distal limit in t-haplotypes for the position of the tw5 lethal, one is inseparable from the tw12 lethal, and one maps distal to tf near the t0(t6) lethal and cld.

Molecular Studies of Mouse Chromosome 17 and the T Complex

1984 ◽  
pp. 141-156 ◽  
Author(s):  
Lee M. Silver ◽  
James I. Garrels ◽  
Hans Lehrach
Keyword(s):  
Mouse Chromosome ◽  
Chromosome 17 ◽  
T Complex ◽  
Molecular Studies

Location of the t complex on mouse chromosome 17 by in situ hybridization with Tcp-1

1986 ◽  
Vol 24 (2) ◽  
pp. 125-127 ◽  
Author(s):  
M. F. Lyon ◽  
J. Zenthon ◽  
E. P. Evansz ◽  
M. D. Burtenshaw ◽  
K. Dudley ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Mouse Chromosome ◽  
Chromosome 17 ◽  
T Complex

scholarly journals Identification of a human ortholog of the mouse Dcpp gene locus, encoding a novel member of the CSP-1/Dcpp salivary protein family

2006 ◽  
Vol 28 (1) ◽  
pp. 129-140 ◽  
Author(s):  
John J. Mullins ◽  
Linda J. Mullins ◽  
Donald R. Dunbar ◽  
William J. Brammar ◽  
Kenneth W. Gross ◽  
...  
Keyword(s):  
Amino Acid ◽  
Oral Cavity ◽  
Salivary Glands ◽  
Mouse Chromosome ◽  
Mrna Translation ◽  
Salivary Protein ◽  
Protein Family ◽  
Chromosome 17 ◽  
Complex Region ◽  
T Complex

Salivary fluid, the collective product of numerous major and minor salivary glands, contains a range of secretory proteins that play key defensive, digestive, and gustatory roles in the oral cavity. To understand the distinct protein “signature” contributed by individual salivary glands to salivary secretions, we studied a family of proteins shown by in vitro mRNA translation to be abundantly expressed in mouse sublingual glands. Molecular cloning, Southern blotting, and restriction fragment length polymorphism analyses showed these to represent one known and two novel members of the common salivary protein (CSP-1)/Demilune cell and parotid protein (Dcpp) salivary protein family, the genes for which are closely linked in the T-complex region of mouse chromosome 17. Bioinformatic analysis identified a putative human CSP-1/Dcpp ortholog, HRPE773, expressed predominantly in human salivary tissue, that shows 31% amino acid identity and 45% amino acid similarity to the mouse Dcpp query sequence. The corresponding human gene displays a similar structure to the mouse Dcpp genes and is located on human chromosome 16 in a region known to be syntenic with the T-complex region of mouse chromosome 17. The predicted mouse and human proteins both display classical NH2-terminal signal sequences, putative jacalin-related lectin domains, and potential N-linked glycosylation sites, suggesting secretion via sublingual saliva into the oral cavity where they may display antimicrobial activity or provide a defensive coating to enamel. Identification of a human CSP-1/Dcpp ortholog therefore provides a key tool for investigation of salivary protein function in human oral health and disease.

scholarly journals Genetic evidence for two t complex tail interaction (tct) loci in t haplotypes.

Genetics ◽  
1989 ◽  
Vol 122 (4) ◽  
pp. 895-903
Author(s):  
J H Nadeau ◽  
D Varnum ◽  
D Burkart
Keyword(s):  
Genetic Analysis ◽  
Tail Length ◽  
Genetic Interactions ◽  
Chromosome 17 ◽  
Wild Type ◽  
T Complex ◽  
Inverted Duplication ◽  
Haplotype A ◽  
Recombination Breakpoints ◽  
T Haplotype

Abstract The t complex on chromosome 17 of the house mouse is an exceptional model for studying the genetic control of transmission ratio, gametogenesis, and embryogenesis. Partial haplotypes derived through rare recombination between a t haplotype and its wild-type homolog have been essential in the genetic analysis of these various properties of the t complex. A new partial t haplotype, which was derived from the complete tw71 haplotype and which is called tw71Jr1, was shown to have unexpected effects on tail length and unique recombination breakpoints. This haplotype, either when homozygous or when heterozygous with the progenitor tw71 haplotype, produced short-tailed rather than normal-tailed mice on certain genetic backgrounds. Genetic analysis of this exceptional haplotype showed that the recombination breakpoints were different from those leading to any other partial t haplotype. Based on this haplotype, a model is proposed that accounts for genetic interactions between the brachyury locus (T), the t complex tail interaction (tct) locus, and their wild-type homolog(s) that determine tail length. An important part of this model is the hypothesis that the tct locus, which enhances the tail-shortening effect of T mutations, is in fact at least two, genetically separable genes with different genetic activities. Genetic analysis of parental and recombinant haplotypes also suggests that intrachromosomal recombination involving an inverted duplicated segment can account for the variable orientation of loci within an inverted duplication on wild-type homologs of the t haplotype.

Identification of a germ-cell-specific transcriptional repressor in the promoter of Tctex-1

Development ◽  
1995 ◽  
Vol 121 (2) ◽  
pp. 561-568 ◽  
Author(s):  
M.J. O'Neill ◽  
K. Artzt
Keyword(s):  
Germ Cell ◽  
Gene Family ◽  
Binding Site ◽  
Transcriptional Repressor ◽  
Chromosome 17 ◽  
Wild Type ◽  
Aberrant Expression ◽  
T Complex ◽  
T Haplotype

The Tctex-1 gene family maps to the t complex of the mouse and consists of four copies on chromosome 17 in both wild-type and t-haplotypes. Tctex-1 mRNA is eightfold overexpressed in male and female germ cells in t-haplotype compound heterozygotes (tx/ty). In order to determine the cause of this aberrant expression and the role of this gene family in spermatogenesis and oogenesis it was subjected to extensive molecular analysis. We find that Tctex-1 protein is present in sperm tails and oocytes and that it is present at equal levels in wild-type and t-haplotype testis. Surprisingly, the excess message in t-haplotypes is not translated. Sequence analysis of the gene family reveals that one copy in t-haplotypes has a mutated start codon. This same copy is deleted for a protein-binding motif in its promoter. This motif, GIM (Germ cell Inhibitory Motif) has strong homology to the Xenopus AP-2-binding site but does not appear to be a binding site for mammalian AP-2. A factor(s) present in testis and ovary, but absent in other mouse tissues binds specifically to this site. Transfection assays using Tctex-1 promoter constructs suggest that GIM functions as a transcriptional repressor. The possible role of Tctex-1 in t complex transmission ratio distortion and sterility is discussed.

Genetic mapping of 10 microsatellites in the t complex region of mouse Chromosome 17

1998 ◽  
Vol 9 (6) ◽  
pp. 472-472 ◽  
Author(s):  
Corine Vernet ◽  
Kuniya Abe ◽  
Karen Artzt
Keyword(s):  
Genetic Mapping ◽  
Mouse Chromosome ◽  
Chromosome 17 ◽  
Complex Region ◽  
T Complex

scholarly journals A novel mouse chromosome 17 hybrid sterility locus: implications for the origin of t haplotypes.

Genetics ◽  
1991 ◽  
Vol 129 (1) ◽  
pp. 237-246
Author(s):  
S H Pilder ◽  
M F Hammer ◽  
L M Silver
Keyword(s):  
Mouse Chromosome ◽  
Genetic Background ◽  
Hybrid Sterility ◽  
Chromosome 17 ◽  
Structural Studies ◽  
Mus Spretus ◽  
Introgression Event ◽  
Different Sources ◽  
Two Hybrid ◽  
T Haplotype

Abstract The effects of heterospecific combinations of mouse chromosome 17 on male fertility and transmission ratio were investigated through a series of breeding studies. Animals were bred to carry complete chromosome 17 homologs, or portions thereof, from three different sources-Mus domesticus, Mus spretus and t haplotypes. These chromosome 17 combinations were analyzed for fertility within the context of a M. domesticus or M. spretus genetic background. Two new forms of hybrid sterility were identified. First, the heterospecific combination of M. spretus and t haplotype homologs leads to complete male sterility on both M. spretus and M. domesticus genetic backgrounds. This is an example of symmetrical hybrid sterility. Second, the presence of a single M. domesticus chromosome 17 homolog within a M. spretus background causes sterility, however, the same combination of chromosome 17 homologs does not cause sterility within the M. domesticus background. This is a case of asymmetrical hybrid sterility. Through an analysis of recombinant chromosomes, it was possible to map the M. domesticus, M. spretus and t haplotype alleles responsible for these two hybrid sterility phenotypes to the same novel locus (Hybrid sterility-4). Previous structural studies had led to the hypothesis that the ancestral t haplotype originated through an introgression event from M. spretus or a related species. If this were true, one might expect that (1) M. spretus homologs would be transmitted at a non-Mendelian ratio within the M. domesticus background, and (2) t haplotypes would be transmitted at a ratio closer to Mendelian within the M. spretus background.(ABSTRACT TRUNCATED AT 250 WORDS)

Mapping of the Sod-2 locus into the t complex on mouse chromosome 17

1988 ◽  
Vol 28 (4) ◽  
pp. 260-264 ◽  
Author(s):  
Felipe Figueroa ◽  
Vladimir Vincek ◽  
Masanori Kasahara ◽  
Graeme I. Bell ◽  
Jan Klein
Keyword(s):  
Mouse Chromosome ◽  
Chromosome 17 ◽  
T Complex

Restriction fragment length polymorphism (RFLP) analysis of three nuclear genes in rock-wallabies (Petrogale: Marsupialia: Macropodidae): a search for genic markers to identify taxa within the Petrogale lateralis-penicillata group

2001 ◽  
Vol 49 (1) ◽  
pp. 27 ◽  
Author(s):  
A. K. Loupis ◽  
M. D. B. Eldridge
Keyword(s):  
Molecular Markers ◽  
Restriction Fragment Length Polymorphism ◽  
Restriction Fragment ◽  
Length Polymorphism ◽  
Fragment Length ◽  
Fragment Length Polymorphism ◽  
Rflp Analysis ◽  
Nuclear Genes ◽  
North East ◽  
Restriction Fragment Length

Many rock-wallaby (Petrogale) species within the lateralis–penicillata complex are morphologically similar and can be distinguished only by their unique karyotypes, frustrating attempts to identify specimens in the field and in museums. As chromosome preparations are not always obtainable from specimens, additional diagnostic molecular markers are required. In this study, restriction fragment length polymorphism (RFLP) analysis of three nuclear genes was undertaken using 100 Petrogale specimens, including representatives of 12 taxa. Eleven novel diagnostic nuclear DNA markers were identified, which enabled the identification of four taxa (P. penicillata, P. purpureicollis, P. lateralis and P. inornata). No markers were found that could reliably distinguish amongst five north-east Queensland species (P. assimilis, P. sharmani, P. mareeba, P. godmani and P. coenensis) or the sampled intraspecific taxa of P. lateralis (P. l . lateralis, P. l. pearsoni, MacDonnell Ranges race). These results are consistent with previous studies in demonstrating that P. penicillata, P. purpureicollis, P. lateralis and P. inornata are genically distinct and that the north-east Queensland species and subspecies/races of P. lateralis form two groups of very closely related taxa. Future research should target more rapidly evolving DNA regions, in order to identify specific molecular markers that distinguish amongst taxa within these two groups. Meanwhile, karyotypic analysis remains the only definitive technique currently available to unambiguously identify all taxa within the lateralis–penicillata group.

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