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Monday, August 17, 2020 | History

4 edition of A molecular and genetic analysis of drosophila cadherin DCad87A found in the catalog.

A molecular and genetic analysis of drosophila cadherin DCad87A

Maretta Chase

A molecular and genetic analysis of drosophila cadherin DCad87A

by Maretta Chase

  • 372 Want to read
  • 28 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.Sc.) -- University of Toronto, 2003.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative.
ID Numbers
Open LibraryOL20125232M
ISBN 100612782719
OCLC/WorldCa56329173

A further useful feature of Drosophila for this analysis is its genetic tractability. Genes can be inserted or removed from the genome with relative ease, allowing the function of individual genes and proteins in reepithelialization to be readily assessed. 7 In addition, it is possible to perform genome-wide genetic screens to identify novel. Principal component analysis showed a clear difference in gene expression with 24% and 17% for the first and second component, respectively. In OFC cells, genes were differentially expressed (p analysis showed enrichment of genes involved in β1 integrin-mediated adhesion and migration, as well as in P-cadherin.

Mosaic analysis using the powerful genetic tools available in Drosophila melanogaster allows deciphering the contribution of each cell type in the different processes leading to the formation of a mature egg. Germ cells and follicle cells are produced by actively dividing stem cells, which permit the use of recombinases, such as FLP, to. The roles of catenins in the cadherin-mediated cell adhesion: functional analysis of E-cadherin-alpha catenin fusion molecules. J. Cell Biol , Crossref, Medline, Google Scholar; Neufeld T. P., Rubin G. M. (). The Drosophila peanut gene is required for cytokinesis and encodes a protein similar to yeast putative bud neck filament.

  INTRODUCTION. E-cadherin is a well-known tumor suppressor protein, and the loss of its expression in tumor cells, in association with the epithelial–mesenchymal transition (EMT), occurs frequently during tumor progression and metastasis (Cano et al., ; Yang and Weinberg, ; Nieto, ; Valastyan and Weinberg, ; Huang et al., ).The resulting loss of cell–cell adhesion and. Cadherins are calcium-dependent cell adhesion proteins (PubMed). In connecting cells they preferentially interact with themselves in a homophilic manner; cadherins may thus contribute to the sorting of heterogeneous cell types (PubMed). During oogenesis, integral component of the guidance mechanisms that regulate the directional persistent collective migration of the border.


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A molecular and genetic analysis of drosophila cadherin DCad87A by Maretta Chase Download PDF EPUB FB2

Genetic analysis of a drosophila neural cell adhesion molecule: Interaction of fasciclin I and abelson tyrosine kinase mutations L1, contactin/F11, neurofascin, and N-cadherin) have been implicated in axonal adhesion and guidance by their expression along developing axons in vivo, their ability to mediate cell sorting in vitro, and the Cited by:   In this study, we used evolutionary rate covariation (ERC) analysis to examine the evolutionary history of the adherens junction and to identify proteins that coevolved with the core adherens junction protein Drosophila E-cadherin (DE-cad).

ERC analysis of DE-cad revealed a collection of proteins with similar evolutionary by: 4. Classical cadherins and the cadherin superfamily. The cadherins were first identified by the labs of Takeichi, Kemler and Jacob as membrane proteins that supported calcium-dependent cell-cell adhesion (,).Molecular cloning allowed the identification of a large superfamily of cell surface glycoproteins, based on sequence homology with a unique domain first found in the Cited by: Drosophila represents a paradigm for the analysis of the cellular, molecular and genetic mechanisms of development and is an ideal model system to study the contribution of Adherens Junctions (AJs.

Signalling by Wingless, the Drosophila Wnt-1 homologue, requires the activity of Armadillo 1,2, the homologue of vertebrate β-catenin 3, which is a component of the cadherin Cited by:   This work addresses the interplay among membrane trafficking, cell adhesion, and tissue integrity maintenance in the Drosophila female germline.

The clathrin adaptor protein 1 (AP-1) complex is shown to regulate the trafficking of E-cadherin to ring canals (RCs), a structure resulting from incomplete cytokinesis and allowing intercellular communication.

Zygotic loss of function of either E-cadherin or N-cadherin has no consequences for mesoderm morphogenesis. Drosophila E-cadherin (Tepass and Hartenstein, ) is expressed at low levels throughout the early blastoderm embryo from maternally provided zygotic transcription of the gene is activated at high levels in the cellularising blastoderm stage embryo, but remains inactive in.

Embryo formation requires tight regulation and coordination of adhesion in multiple cell types. By undertaking imaging, three-dimensional (3D) reconstructions and genetic analysis during posterior midgut morphogenesis in Drosophila, we find a new requirement for the conserved fibroblast growth factor (FGF) signaling pathway in the maintenance of epithelial cell adhesion through FGF modulation.

In contrast, in Drosophila much progress has resulted from an in vivo molecular genetic approach to analyzing muscle development. These studies have been driven by the powerful molecular genetics available, coupled to the fact that myoblast fusion to make the larval muscles occurs in a defined period of a few hours of embryonic development.

Molecular analysis of Cad99C. (A) Genomic map of the Cad99C transcription unit. The ORF is in red. Deletions derived from P element insert GE are shown in blue and those from GE in green. A dotted line indicates the uncertainty interval of a breakpoint. Triangles indicate primers used to map the deletion breakpoints.

Drosophila as a Model Organism for Population Genetics. First introduced as a research tool in the early 20th century (Morgan et al.

; Muller ), Drosophila has played a crucial role in all fields of genetic analysis, including ecology, speciation, development, and also population genetics (Powell ).Following early studies of chromosomal inversion polymorphisms (Dobhansky Three components of Drosophila adherens junctions, analogous to those in vertebrates, have been identified: Armadillo (homolog of β-catenin), Drosophila E-cadherin (DE-cadherin), and α-catenin.

We carried out the first analysis of the interactions between these proteins using in vitro binding assays, the yeast two-hybrid system, and in vivo.

Genetic analysis has finally come of age in the study of neural cell adhesion molecules and their function during growth cone guidance in Drosophila. – 50 Years of Molecular Population Genetics H ALF a century ago, two seminal articles inaugurated the field of molecular population genetics.

Applying the tech-nique of protein gel electrophoresis to several allozyme loci, the first measures of genetic variation in the species Drosophila. The Drosophila N-cadherin has a larger complex extracellular domain that mediates homophilic interactions (Iwai et al., ).

It is evolutionarily conserved in worms, insects, and vertebrates (Broadbent and Pettitt, ; Tanabe et al., ), and thus may be. This study uses genetic mapping to place its location in 29D1,2-D4,5 on the 2L chromosome, between the distal breakpoint of Df(2L)N, a deficiency that uncovers dachs, and the acer gene.

This chromosomal region contains approximately 83 kb of DNA, an interval which recently has been cloned and sequenced by the Berkeley Drosophila Genome Project. Introduction. The fruit fly has come a long way since Charles W. Woodworth, an American entomologist, first proposed to use Drosophila melanogaster as a genetic model organism in (Sturtevant, ).In the past years, fly research has been particularly valuable for the analysis of molecular mechanisms underlying genetic phenomena, behavior and development.

The cadherin superfamily is also broadly represented in inver-tebrates. Analysis of the Drosophila genome has revealed 17 genes that encode proteins containing EC-like domains (12).

Three of these molecules, DN-cadherin encoded by CadN, DE-cadherin encoded by Shg, and DN-cad2 encoded by CadN2. To analyze the function of this molecule, we cloned the Drosophila fas 11 homolog and generated mutants in the gene.

In both grasshopper and Drosophila, fasciclin II is expressed on the MP1 fascicle and a subset of other axon pathways. In fas 11 mutant Drosophila embryos, the CNS displays no gross phenotype, but the MP1 fascicle fails to develop.

The cadherin superfamily represent a diverse group of transmembrane receptors which mediate cell-cell adhesion. Cadherins are defined by the presence of cadherin domains, typically organised in tandem repeats, which mediate calcium-dependent homophilic interactions between cadherin molecules.

(Adapted from FBrf). Results:DE-Cadherin-Catenin complexes are shown to localize at the cell contact between the two cells born from the asymmetric division of the pI mitotic spindle of the dividing pIIa cell rotates to line up with asymmetrically localized DE-Cadherin-Catenin a complete loss of DE-Cadherin function disrupts the apical-basal polarity of the epithelium, both a partial loss.

Golgi serine/threonine protein kinase required for intermediate growth in the proximal-distal axis. Phosphorylates specific residues within extracellular cadherin domains of Fat (ft) and Dachsous (ds) as they transit through the Golgi (PubMed).Acts in ommatidial polarity determination as a secondary signal downstream of Notch, JAK/STAT and wingless.

Newsome, T. P., Asling, B. & Dickson, B. J. Analysis of Drosophila photoreceptor axon guidance in eye-specific mosaics. Development– .