Download Cytomechanics: The Mechanical Basis of Cell Form and by Jürgen Bereiter-Hahn (auth.), Professor Dr. Jürgen PDF

By Jürgen Bereiter-Hahn (auth.), Professor Dr. Jürgen Bereiter-Hahn, Professor Dr. O. Roger Anderson, Professor Dr. Wolf-Ernst Reif (eds.)

Genetic details determines the composition of molecules comprising cytoskeletal components, membranes and receptors. The supramolecular association of those elements represents a self-assembly procedure managed via physicochemical and mechanical interactions. This normal speculation demarcates the purpose of learning mobile mechanics. Description and review of mechanical houses of cells and their organelles, in addition to of the forces exerted via them, is the scope of this e-book on Cytomechanics. Emphasis is laid at the position of mechanical houses within the iteration of form and cytoplasmic movement, and at the uncomplicated rules and elements selecting mechanical properties.

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Extra info for Cytomechanics: The Mechanical Basis of Cell Form and Structure

Sample text

05 for the vacuolar sap, Nothnagel and Webb-(1982) performed calculations for three models to test whether they would be sufficient to drive cyclosis. 24 1. Bereiter-Hahn The driving force may be provided by (1) myosinlike molecules migrating along actin cables; (2) myosinlike molecules attached to small spherical particles moving along actin cables; and (3) myosinlike molecules which are incorporated into a fibrous or membranous network or a gel extending into the cytoplasm. Condition 3 would exert enough viscous pull on the endoplasm to account for the observed streaming.

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A' ,( ~ I I • I ' . ' '. , / " ! I " . " , •• , '/'i/ " " " ' , t l \ " i. • t ' '. '" .... " Yo.. : 'IlL .. a ~ ~..! ~ ~L ~ "', ' . ,,'" '.. :J'.. ~ : ,,-... . 'II. "-. - ~ : 'Ir ~ : ...... : • I, -: : • • • ' • • ; • ~J.. O'. ' •• ' .. " ~.. '. • • . ' •. ". ,. , \ . ' , . . " I; "' . . . . '... ' .... . . " .... I •••• 'li,'~i •• "- '"' ~ • •••• •• •• t •• \ \.... . I. '. t ••••• j • ' ••• l . ' Fig. 3. Model experiment showing the transformation of an isodiametric network (a) into an anisotropic fibrillar structure (b) by generation of tension between two fixed points.

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