The GTP bound to $\beta$-tubulin hydrolyzes to GDP and P_i A) during depolymerization of the $\alpha$-$\beta$ dimer. B) during polymerization of dimers onto microtubules. C) during depolymerization of dimers from microtubules. D) following polymerization but before depolymerization.

Question

Quizplus · Accepted Answer

GTP bound to $\beta$-tubulin is hydrolyzed to GDP after the dimer is added to the microtubule, but before it depolymerizes.

The GTP Bound To β\betaβ -Tubulin Hydrolyzes to GDP and Pi A) During Depolymerization of Pi

The GTP Bound To $\beta$ -Tubulin Hydrolyzes to GDP and P_i
A) During Depolymerization of P_i