Caspase enzymes promote cell death, but are also involved in sperm development in fruit flies. The discovery that, in sperm, caspase activation is restricted to the surface of organelles called mitochondria sheds light on this unusual role.
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Nagata, S. Killer enzymes tethered. Nature 533, 475–476 (2016). https://doi.org/10.1038/nature18439
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DOI: https://doi.org/10.1038/nature18439
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