Microtubules

ID #1325

In the axoneme how do the dynein arms reach out and grab the B-tubule to the A-tubule?


The tail ends of the dyneins are attached to the 'A' tubule of one doublet and that places the head group so that it's able to grab the 'B' tubule of the neighboring doublet. If you'll recall from our slides and movies of actin and myosin, it's the same concept where the head group can sit on the cytoskeletal element depending on what's in its nucleotide binding site.

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