Epsilon tubulin is a protein encoded by the TUBE1 gene which is approximately 52,9 kDa. Epsilon tubulin is localised to the cytoplasm and cytoskeleton. It is involved in Sertoli-Sertoli cell junction dynamics, the PAK pathway, G-beta gamma signalling and ERK signalling. This protein falls under the tubulin superfamily. It localizes to the centriolar sub-distal appendages that are associated with the older centriole after centrosome duplication and plays a central role in organization of the microtubules during centriole duplication. Epsilon tubulin is expressed in the cells of the nervous system. Mutations in the TUBE1 gene may result in chronic frontal sinusitis. STJ97751 was developed from clone 3G1 and was affinity-purified from mouse ascites by affinity-chromatography using specific immunogen. This primary antibody detects endogenous levels of epsilon tubulin.