The Role of Cortexillin in Dictyostelium discoidium Movement

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Authors
McPeak, Christopher L.
Issue Date
1998
Type
Thesis
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en_US
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Abstract
Dictyostelium discoidium is an ideal cell for the study of cell motility as it is analogous to many of the cells found within the human body. There are many proteins within the actin filament meshwork of the cytoskeleton of these cells which are intimately involved in the mechanisms of cell locomotion, cytokinesis, and phagocytosis. In this study, we determined the "normal" cytoskeletal organization of AX2 Dictyostelium cells through biochemical techniques as well as detailed examination under the electron microscope. We also examined the protein cortexillin, an actin binding protein, determining its localization and amount within the cytoskeleton of the Dictyosteilum cell. The results of this study revealed the average length, concentration, and number of actin filaments within the AX2 Dictyostelium cell. Through electron microscopic and immunogold labeling techniques, we also were able to provide direct visual correlation between the morphology and fine structure of the cytoskeleton with differences in motile behavior between wild-type and cortexillin null cells reported previously.
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iv, 47 p.
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U.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder. All rights reserved.
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