under these conditions xmap promotes a 10-fold increase in the on-rate constant ( from 1.4 s-1.microm-1 for microtubules assembled from pure tubulin to 15 s-1.microm-1 ) , and a 10-fold decrease in off-rate constant ( from 340 to 34 s-1 ) .
C0026046
microtubules
C0041348
tubulin