When detergent‐extracted cell models of Chlamydomonas reinhardtii were left in the presence of 1 mM Mg‐ATP for more than 30 minutes flagellar axonemes tended to become frayed into fine bundles of microtubules. Under such conditions, bundles made up of a pair of outer‐doublet microtubules displayed oscillatory bending movements of low (< 2 Hz) frequencies. The two doublet microtubules underwent association‐dissociation cycles coupled with gross bending movement. A model is presented to explain this phenomenon by unidirectional sliding interaction between the two microtubules.
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Kamiya et al. (1986) studied this question.
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