background:
Centrosome Marker
Gamma tubulin, a member of the tubulin superfamily, is a ubiquitous and highly conserved protein within the microtubule organizing centre (MTOC). Gamma tubulin is not a component of microtubules, rather it functions as the microtubule nucleator at the MOTC, is responsible for binding microtubule minus ends and mediating the link between microtubles and the centrosome. By binding to the beta tubulin subunit of the tubulin molecule, it establishes the polarity of a microtubule leaving the alpha tubulin subunit exposed at the positive end.
The abundance of Gamma tubulin is less than 1% of the level of either alpha or beta tubulin. It shares approximately 28-32% identity with alpha tubulin from various organisms and 32-36% identity with beta tubulins. The detection, localization and characterization of proteins involved in microtubule function is fundamental to the understanding of mitosis, meiosis and the microtubule cytoskeleton.
Function:
Tubulin is the major constituent of microtubules. Gamma tubulin is found at microtubule organizing centers (MTOC) such as the spindle poles or the centrosome. Pericentriolar matrix component that regulates alpha/beta tubulin minus-end nucleation, centrosome duplication and spindle formation.
Subunit:
Interacts with TUBGCP2 and TUBGCP3. Interacts with B9D2 (By similarity). Interacts with CDK5RAP2; the interaction is leading to centrosomal localization of TUBG1 and CDK5RAP2. Interacts with PIFO.
Subcellular Location:
Cytoplasm, cytoskeleton, centrosome.
Tissue Specificity:
Phosphorylation at Ser-131 by BRSK1 regulates centrosome duplication, possibly by mediating relocation of gamma-tubulin and its associated proteins from the cytoplasm to the centrosome.
Post-translational modifications:
Phosphorylation at Ser-131 by BRSK1 regulates centrosome duplication, possibly by mediating relocation of gamma-tubulin and its associated proteins from the cytoplasm to the centrosome.
Similarity:
Belongs to the tubulin family.
Database links:
Entrez Gene: 27175 Human
Entrez Gene: 7283 Human
Entrez Gene: 103733 Mouse
Entrez Gene: 103768 Mouse
Entrez Gene: 252921 Rat
Entrez Gene: 136991 Rat
Omim: 191135 Human
Omim: 605785 Human
SwissProt: P23258 Human
SwissProt: Q9NRH3 Human
SwissProt: P83887 Mouse
SwissProt: Q8VCK3 Mouse
SwissProt: P83888 Rat
Unigene: 279669 Human
Unigene: 708059 Human
Unigene: 142348 Mouse
Unigene: 479145 Mouse
Unigene: 154431 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
结构蛋白（Structural Proteins）
gamma tubulin 微管蛋白是存于中心体的另一种微管蛋白, gamma微管蛋白对微管的形成具有重要作用。gamma微管蛋白通过与β-微管蛋白的相互作用帮助微管的成核反应(nucleation)。即在微管的组装中gamma微管蛋白先形成一个圆或形成钩环结构, γ微管蛋白的这种结构可指导微管蛋白二聚体结合上去并进行微管的组装。gamma微管蛋白在微管的组装中起关键作用。
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