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How centrosomes nucleate microtubule growth is a question that has puzzled cell biologists for decades. It has been suspected for some time that a centrosome contains multiple copies of a basic microtubule-nucleating structure, each of which is responsible for nucleating a single microtubule. This suspicion has now been confirmed. A ring of gamma-tubulin molecules, associated with a large protein complex, apparently serves as the long-sought-after microtubule-nucleating structure.


Journal article


Trends Cell Biol

Publication Date





248 - 251