Microtubules

ID #1339

For the MOC, are dimers added at the minus end, so at the MOC, and then the microtubule extends outward, or are the microtubules polymerized at the plus end just by concentration of GTP bound tubulin or are sections of microtubules made at the MOC and then "shipped" to the end, or am I completely wrong on all these counts?


Option B. MTs are made from the MOC by "seeding" a new MT with a type of tubulin we didn't discuss in class (called gamma tubulin). Then the standard tubulin dimers are all added to the plus ends of the newly-forming MT.

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