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. 1997 Sep 8;138(5):1067–1075. doi: 10.1083/jcb.138.5.1067

Table II.

Flexural Rigidity in the Presence of MAP2 Isoforms

Isoform EI n
10−24/Nm2
MAP2c 15.1 ± 3.3 18
MAP2d 16.1 ± 2.7  8
MAP2c3 14.5 ± 3.8 16
Pure MT  3.8 ± 0.9 16
HT40 10.4 ± 3.1 28
MAP mix 16.0 ± 3.0 10

MAP2d has an additional repeat inserted between repeats 1 and 2; MAP2c3 has repeat 3 only. The values for pure tubulin microtubules, and microtubules in the presence of HT40 or mixture of brain MAPs, are also included for comparison. EI, flexural rigidity ± SD. n, number of experiments.