alexa The extended tubulin superfamily.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): McKean PG, Vaughan S, Gull K

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Abstract Although most eukaryotic cells can express multiple isotypes of alphabeta-tubulin, the significance of this diversity has not always been apparent. Recent data indicate that particular alphabeta-tubulin isotypes, both genome encoded and those derived by post-translational modification, can directly influence microtubule structure and function--thus validating ideas originally proposed in the multitubulin hypothesis over 25 years ago. It has also become increasingly evident over the past year that some (but intriguingly not all) eukaryotes encode several other tubulin proteins, and to date five further members of the tubulin superfamily, gamma, delta, epsilon, zeta and eta, have been identified. Although the role of gamma-tubulin in the nucleation of microtubule assembly is now well established, far less is known about the functions of delta-, epsilon-, zeta- and eta-tubulin. Recent work has expanded our knowledge of the functions and localisation of these newer members of the tubulin superfamily, and the emerging data suggesting a restricted evolutionary distribution of these 'new' tubulin proteins, conforms to established knowledge of microtubule cell biology. On the basis of current evidence, we predict that delta-, epsilon-, zeta- and eta-tubulin all have functions associated with the centriole or basal body of eukaryotic cells and organisms.
This article was published in J Cell Sci and referenced in Journal of Addiction Research & Therapy

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