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The role of Tropomyosin in Zebrafish development - Dissertation Example

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Tropomyosin is a long protein strand composed of two fully alpha helical chains in a coiled-coil dimmer, and binds along the length of the actin filament. It is also bound to bead-like protein complex, troponin, in which, together, they regulate the actin-myosin interactions in muscle contraction” (Biology Online)…
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The role of Tropomyosin in Zebrafish development
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Download file to see previous pages Tropomyosin is a long protein strand composed of two fully alpha helical chains in a coiled-coil dimmer, and binds along the length of the actin filament. It is also bound to bead-like protein complex, troponin, in which, together, they regulate the actin-myosin interactions in muscle contraction” (Biology Online). They are the one moving the actin filament through generating force by elongating one end of the filament coupled with shrinkage of the other, causing net movement of the intervening strand. And as actin filaments are moved, they act like a molecular switch for the movement of myosin molecules that are attach to the actin filaments and walks along them. Then cell division and morphing follows. Thus, Tropomyosin plays a significant role in cell morphology, as well as cell division, size and shape. Zebrafish is mostly used as model for researches. They have a number of unique characteristics that makes it a fantastic species for investigating vertebrate development and for modelling human disease, genetics and biology. However, they also have disadvantages. Advantages:1.Inexpensive.2.The embryos are transparent.3The embryos develop quickly; they go from a single cell to something that is recognisable as a tiny fish for within 24 hours. A mouse takes 21 days.4.The embryos can be physically manipulated genetically. You can transplant a single cell or group of cells into host embryos.5. The eggs are externally fertilised; embryos develop outside the mother’s body...
The government is willing to fund zebrafish researchers and provide screening tools which will dramatically advance the ability to detect and characterise genes, pathways and phenotypes of interest for aging, development, organ formation, sensory processes, disease processes, and other areas. For they believe that results could be studied for the cure of some human diseases could also be made. It is likely that blood function and heart development in zebrafish are similar to humans. Some mutations on zebrafish embryos might mimic human syndromes, understanding them will provide us valuable insight as to the underlying problem. Such an understanding may lead to new treatments. That is why the government encourages and is willing to fund investigator-initiated applications designed to exploit the power of the zebrafish as a vertebrate model for biomedical and behavioral research. Reseach Methods. Tropomyosin (Tpm) proteins, encoded by four Tpm genes (Tpm1–4), are associated with the stabilization of the F-actin filaments and play important roles in modulating muscle contraction. So far, little is known about Tpm4 function in embryonic heart development and its involvement in the cardiovascular diseases. Study the functions of different isoforms of tpm4 in embryonic heartbeat in zebrafish. Generate a transgenic zebrafish line by insertion of a Tol2 transposon gene trap vector. Observe by transmission electron microscopy to reveal the ventricular myocytes of mutant fish contained. Study if Tpm1-4 would be stable for a zebrafish. 1. Fish and gene trapping. 2. TAIL-PCR, RT-PCR, and tpm4 cDNA cloning. 3. Whole-mount in situ hybridisation, mopholinos, microinjection and genotyping. 4. Transmission electron microscopy. Cited Works: Zhao, Long, et. Al. Heart ...Download file to see next pagesRead More
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