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. 1977 May 16;180(2):241-52.
doi: 10.1007/BF00231956.

Control of shape and pattern during the assembly of a large microtubule bundle. Evidence for a microtubule-nucleating-template

P J Pearson, J B Tucker

Control of shape and pattern during the assembly of a large microtubule bundle. Evidence for a microtubule-nucleating-template

P J Pearson et al. Cell Tissue Res. .

Abstract

Microtubules are packed and linked together in a well defined hexagonal arrangement in the cytopharyngeal microtubule bundles of the ciliate Nassula. Early stages in the morphogenesis of these bundles have been examined. Elements which nucleate assembly of bundle microtubules are apparently closely associated before tubule assembly commences. These nucleating elements seem to be bound together in highly ordered arrays to form microtubule-nucleating-templetes. Each array of elements is attached to the proximal end of a basal body and appears to establish the pattern of tubule packing and cross-sectional shape of a tubule bundle. A self-assembly procedure which accounts for the anisometric growth and shaping of a template and its microtubule bundle is proposed.

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