Septins comprise a conserved family of cytoskeletal proteins distinct from the microfilament, microtubule and intermediate filament systems. They are GTPases that have been implicated in a number of cellular processes ranging from mitosis to vesicular trafficking. A new study identifies a previously undefined role for septins as cellular 'corsets', modulating cell shape and providing cortical rigidity in T cells that allows for their controlled migration.
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Srougi, M., Burridge, K. Undressing a cellular corset: septins exposed. Nat Cell Biol 11, 9–10 (2009). https://doi.org/10.1038/ncb0109-9
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DOI: https://doi.org/10.1038/ncb0109-9