αTAT1 is the major α-tubulin acetyltransferase in mice

Nereo Kalebic, Simona Sorrentino, Emerald Perlas, Giulia Bolasco, Concepcion Martinez and Paul A. Heppenstall ()
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Nereo Kalebic: Mouse Biology Unit, EMBL
Simona Sorrentino: Mouse Biology Unit, EMBL
Emerald Perlas: Mouse Biology Unit, EMBL
Giulia Bolasco: Mouse Biology Unit, EMBL
Concepcion Martinez: Mouse Biology Unit, EMBL
Paul A. Heppenstall: Mouse Biology Unit, EMBL

Nature Communications, 2013, vol. 4, issue 1, 1-10

Abstract: Abstract Post-translational modification of tubulin serves as a powerful means for rapidly adjusting the functional diversity of microtubules. Acetylation of the ε-amino group of K40 in α-tubulin is one such modification that is highly conserved in ciliated organisms. Recently, αTAT1, a Gcn5-related N-acetyltransferase, was identified as an α-tubulin acetyltransferase in Tetrahymena and C. elegans. Here we generate mice with a targeted deletion of Atat1 to determine its function in mammals. Remarkably, we observe a loss of detectable K40 α-tubulin acetylation in these mice across multiple tissues and in cellular structures such as cilia and axons where acetylation is normally enriched. Mice are viable and develop normally, however, the absence of Atat1 impacts upon sperm motility and male mouse fertility, and increases microtubule stability. Thus, αTAT1 has a conserved function as the major α-tubulin acetyltransferase in ciliated organisms and has an important role in regulating subcellular specialization of subsets of microtubules.

Date: 2013
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DOI: 10.1038/ncomms2962

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