The function of MZT2A (mitotic spindle organizing protein 2A, ENSG00000173272) is as follows. Required for the recruitment and the assembly of the gamma- tubulin ring complex (gTuRC) at the centrosome (PubMed:20360068, PubMed:39321809). The gTuRC regulates the minus-end nucleation of alpha-beta tubulin heterodimers that grow into microtubule protafilaments, a critical step in centrosome duplication and spindle formation (PubMed:39321809). {ECO:0000269|PubMed:20360068, ECO:0000269|PubMed:39321809}.