Gamma-tubulin complex is necessary for microtubule nucleation at the centrosome. Plays a role in neuronal migration. Gamma-tubulin complex is composed of gamma-tubulin, TUBGCP2, TUBGCP3, TUBGCP4, TUBGCP5 and TUBGCP6. Interacts with ATF5; the ATF5:PCNT:polyglutamylated tubulin (PGT) tripartite unites the mother centriole and the pericentriolar material (PCM) in the centrosome (PubMed:26213385). Additional isoforms may exist. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Ubiquitously expressed. The disease may be caused by variants affecting the gene represented in this entry. Belongs to the TUBGCP family.