They write stuff like this, – true but politically incorrect:
The flexibility of tubulin and the consequent versatility of its self-assembly can hardly be an accident. We propose that the polymorphism of assembly unique to tubulin reflects an exquisite tuning mechanism for the complex interaction of different microtubule intermediates with cellular factors that need to detect or make direct use of the growing or shortening state of microtubules to play functional roles at the right time and place in the cell.
A friend sent this in, in response to this vid from Shawnee State University:
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