Gamma-tubulin complex component 4 (TUBGCP4)

Gamma-tubulin complex component 4 (TUBGCP4) is a protein encoded by the TUBGCP4 gene that forms part of the gamma-tubulin ring complex (γTuRC), a multi-protein structure essential for microtubule nucleation at the centrosome in mammalian cells. This process is critical for minus-end nucleation of alpha-beta tubulin heterodimers, spindle assembly, and centrosome duplication during cell division. The protein features a structure of five helical bundles, with a C-terminal domain that directly binds gamma-tubulin. Mutations in TUBGCP4 have been associated with autosomal recessive microcephaly and chorioretinopathy. The gene undergoes alternative splicing and has important paralogs such as TUBGCP6. There are currently no approved drugs that directly target TUBGCP4, nor is it established as a clinical biomarker or direct therapeutic target; nevertheless, its central role in microtubule organization links it to cellular processes relevant to diseases such as developmental disorders and potentially cancer.

Other names

76PGCP4GCP-4hGCP4h76phGrip76FLJ14797Grip76MCCRP3tubulin gamma complex associated protein 4gamma-tubulin complex protein 4gamma-ring complex protein 76 kDagamma tubulin ring complex protein (76p gene)