just pick the answer no explanation In the pericentriolar ma

just pick the answer no explanation

In the pericentriolar materials tPCM) of the centrosome, serves as a template on which the first row of tubulin dimers assemble. microtubule associated protein complexes beta tubulin ring complexes alpha and beta tubulin complexes alpha tubulin ring complexoes gama tubulin ring complexes

Solution

In Microtubule formation of cell the -tubulin binds with complex protein 2 and 3. After that /-tubulin dimmers came and bind on the -tubulin site. After that polymer starts binding at that site.

So answer is gamma-tubulin complex