Cell and Molecular Biology of the Cytoskeleton

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Cell and Molecular Biology of the Cytoskeleton focuses on the three major fibrous proteins in the cytoplasm that are collectively known as the cytoskeletal sys­ tem. These polymorphic cytoskeletal proteins are microtubules (25-nm diam­ eter), microfilaments (6-nm diameter), and intermediate filaments (l O-nm diameter). Microtubules consist of tubulin and several well-characterized mi­ crotubule-associated proteins (MAPs) such as MAPl, MAP2, and tau. Micro­ filaments consist of actin and associate with actin-binding proteins, including alpha-actinin, filamin, myosin, tropomyosin, vinculin, and others. Intermedi­ ate filaments consist of at least five different tissue-specific classes, including desmin or skeletin (muscle), prekeratin (epithelial), vimentin (mesenchymal), neurofilament (nerve), and glial acidic fibrillary protein (astrocytes). In this volume distinguished researchers in the field cover the interaction of these fibrous proteins, not only with each other and other cytoplasmic components, but also with such biological processes as cell shape changes, growth, motility, secretion, and division. These comprehensive reviews ex­ plore the cytoskeleton's molecular, biochemical, and structural properties with an emphasis on their manifestation in the living cell.