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In centrosomes, the gamma-tubulin ring complexes (gamma-TuRCs) located on the surface act as an essential nucleation site for the growth (with polarity) of microtubules.

However, there is also a centriole composed of two centriole units in a T-shape structure and a centrosomal matrix. According to the article in Wikipedia, cells can still function normally and grow without centrioles, and I have been unable to find information regarding the purpose of centrioles and the centrosomal matrix.

My question is therefore:

What is the function of centrioles and the centrosomal matrix?

If it were possible to construct a synthetic sphere with many gamma-TuRCs on its surface would the cell be able to perform a normal cell cycle?

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