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(A) Microtubule severing rates in the presence of 0.75 – 3 kDa poly-glutamic acid (6 to 23 glutamates). Error bars, S.E.M. (n > 24 microtubules from multiple chambers)
(B) Microtubule severing rates in the presence of 3 – 15 kDa poly-glutamic acid (23 to 115 glutamates). Error bars, S.E.M. (n > 24 microtubules from multiple chambers). See also Figure S5.
